Fixes singleletter vars in mobs.dm and blood.dm (#90284)

## About The Pull Request

Just found this whilst working on something else downstream, why not fix
it

## Why It's Good For The Game

Something something readable bleeding.

## Changelog
🆑
code: The mobs subsystem and blood.dm file for living mobs no longer use
single letter vars
/🆑

code/controllers/subsystem/mobs.dm

@@ -35,11 +35,11 @@ SUBSYSTEM_DEF(mobs)
 	var/times_fired = src.times_fired
 	var/seconds_per_tick = wait / (1 SECONDS)
 	while(currentrun.len)
-		var/mob/living/L = currentrun[currentrun.len]
+		var/mob/living/processing_mob = currentrun[currentrun.len]
 		currentrun.len--
-		if(L)
-			L.Life(seconds_per_tick, times_fired)
+		if(processing_mob)
+			processing_mob.Life(seconds_per_tick, times_fired)
 		else
-			GLOB.mob_living_list.Remove(L)
+			GLOB.mob_living_list.Remove(processing_mob)
 		if (MC_TICK_CHECK)
 			return

code/modules/mob/living/blood.dm

@@ -193,8 +193,7 @@
 		rate_of_change = ", but it's clotting up quickly!"
 	else
 		// flick through our wounds to see if there are any bleeding ones getting worse or holding flow (maybe move this to handle_blood and cache it so we don't need to cycle through the wounds so much)
-		for(var/i in all_wounds)
-			var/datum/wound/iter_wound = i
+		for(var/datum/wound/iter_wound as anything in all_wounds)
 			if(!iter_wound.blood_flow)
 				continue
 			var/iter_wound_roc = iter_wound.get_bleed_rate_of_change()
@@ -219,17 +218,16 @@
 
 /mob/living/carbon/restore_blood()
 	blood_volume = BLOOD_VOLUME_NORMAL
-	for(var/i in bodyparts)
-		var/obj/item/bodypart/BP = i
-		BP.setBleedStacks(0)
+	for(var/obj/item/bodypart/bodypart_to_restore as anything in bodyparts)
+		bodypart_to_restore.setBleedStacks(0)
 
 /****************************************************
 				BLOOD TRANSFERS
 ****************************************************/
 
 //Gets blood from mob to a container or other mob, preserving all data in it.
-/mob/living/proc/transfer_blood_to(atom/movable/AM, amount, forced, ignore_incompatibility)
-	if(!blood_volume || !AM.reagents)
+/mob/living/proc/transfer_blood_to(atom/movable/receiver, amount, forced, ignore_incompatibility)
+	if(!blood_volume || !receiver.reagents)
 		return FALSE
 	if(blood_volume < BLOOD_VOLUME_BAD && !forced)
 		return FALSE
@@ -245,24 +243,23 @@
 
 	var/list/blood_data = get_blood_data(blood_id)
 
-	if(iscarbon(AM))
-		var/mob/living/carbon/C = AM
-		if(blood_id == C.get_blood_id())//both mobs have the same blood substance
+	if(iscarbon(receiver))
+		var/mob/living/carbon/carbon_receiver = receiver
+		if(blood_id == carbon_receiver.get_blood_id()) //both mobs have the same blood substance
 			if(blood_id == /datum/reagent/blood) //normal blood
 				if(blood_data["viruses"])
-					for(var/thing in blood_data["viruses"])
-						var/datum/disease/D = thing
-						if((D.spread_flags & DISEASE_SPREAD_SPECIAL) || (D.spread_flags & DISEASE_SPREAD_NON_CONTAGIOUS))
+					for(var/datum/disease/blood_disease as anything in blood_data["viruses"])
+						if((blood_disease.spread_flags & DISEASE_SPREAD_SPECIAL) || (blood_disease.spread_flags & DISEASE_SPREAD_NON_CONTAGIOUS))
 							continue
-						C.ForceContractDisease(D)
-				if(!(blood_data["blood_type"] in get_safe_blood(C.dna.blood_type)) && !(ignore_incompatibility))
-					C.reagents.add_reagent(/datum/reagent/toxin, amount * 0.5)
+						carbon_receiver.ForceContractDisease(blood_disease)
+				if(!(blood_data["blood_type"] in get_safe_blood(carbon_receiver.dna.blood_type)) && !(ignore_incompatibility))
+					carbon_receiver.reagents.add_reagent(/datum/reagent/toxin, amount * 0.5)
 					return TRUE
 
-			C.blood_volume = min(C.blood_volume + round(amount, 0.1), BLOOD_VOLUME_MAX_LETHAL)
+			carbon_receiver.blood_volume = min(carbon_receiver.blood_volume + round(amount, 0.1), BLOOD_VOLUME_MAX_LETHAL)
 			return TRUE
 
-	AM.reagents.add_reagent(blood_id, amount, blood_data, bodytemperature)
+	receiver.reagents.add_reagent(blood_id, amount, blood_data, bodytemperature)
 	return TRUE
 
 
@@ -275,16 +272,15 @@
 		//set the blood data
 		blood_data["viruses"] = list()
 
-		for(var/thing in diseases)
-			var/datum/disease/D = thing
-			blood_data["viruses"] += D.Copy()
+		for(var/datum/disease/disease as anything in diseases)
+			blood_data["viruses"] += disease.Copy()
 
 		blood_data["blood_DNA"] = dna.unique_enzymes
 		if(LAZYLEN(disease_resistances))
 			blood_data["resistances"] = disease_resistances.Copy()
 		var/list/temp_chem = list()
-		for(var/datum/reagent/R in reagents.reagent_list)
-			temp_chem[R.type] = R.volume
+		for(var/datum/reagent/blood_reagent in reagents.reagent_list)
+			temp_chem[blood_reagent.type] = blood_reagent.volume
 		blood_data["trace_chem"] = list2params(temp_chem)
 		if(mind)
 			blood_data["mind"] = mind
@@ -303,9 +299,8 @@
 		blood_data["features"] = dna.features
 		blood_data["factions"] = faction
 		blood_data["quirks"] = list()
-		for(var/V in quirks)
-			var/datum/quirk/T = V
-			blood_data["quirks"] += T.type
+		for(var/datum/quirk/quirk as anything in quirks)
+			blood_data["quirks"] += quirk.type
 		return blood_data
 
 //get the id of the substance this mob use as blood.
@@ -360,18 +355,18 @@
 	return donor_blood_data["blood_type"] in get_safe_blood(patient_blood_data["blood_type"])
 
 //to add a splatter of blood or other mob liquid.
-/mob/living/proc/add_splatter_floor(turf/T, small_drip)
+/mob/living/proc/add_splatter_floor(turf/splatter_turf, small_drip)
 	if(get_blood_id() != /datum/reagent/blood)
 		return
-	if(!T)
-		T = get_turf(src)
-	if(isclosedturf(T) || (isgroundlessturf(T) && !GET_TURF_BELOW(T)))
+	if(!splatter_turf)
+		splatter_turf = get_turf(src)
+	if(isclosedturf(splatter_turf) || (isgroundlessturf(splatter_turf) && !GET_TURF_BELOW(splatter_turf)))
 		return
 
 	var/list/temp_blood_DNA
 	if(small_drip)
 		// Only a certain number of drips (or one large splatter) can be on a given turf.
-		var/obj/effect/decal/cleanable/blood/drip/drop = locate() in T
+		var/obj/effect/decal/cleanable/blood/drip/drop = locate() in splatter_turf
 		if(drop)
 			if(drop.drips < 5)
 				drop.drips++
@@ -382,39 +377,39 @@
 				temp_blood_DNA = GET_ATOM_BLOOD_DNA(drop) //we transfer the dna from the drip to the splatter
 				qdel(drop)//the drip is replaced by a bigger splatter
 		else
-			drop = new(T, get_static_viruses())
+			drop = new(splatter_turf, get_static_viruses())
 			drop.transfer_mob_blood_dna(src)
 			return
 
 	// Find a blood decal or create a new one.
-	var/obj/effect/decal/cleanable/blood/B = locate() in T
-	if(!B)
-		B = new /obj/effect/decal/cleanable/blood/splatter(T, get_static_viruses())
-	if(QDELETED(B)) //Give it up
+	var/obj/effect/decal/cleanable/blood/blood_spew = locate() in splatter_turf
+	if(!blood_spew)
+		blood_spew = new /obj/effect/decal/cleanable/blood/splatter(splatter_turf, get_static_viruses())
+	if(QDELETED(blood_spew)) //Give it up
 		return
-	B.bloodiness = min((B.bloodiness + BLOOD_AMOUNT_PER_DECAL), BLOOD_POOL_MAX)
-	B.transfer_mob_blood_dna(src) //give blood info to the blood decal.
+	blood_spew.bloodiness = min((blood_spew.bloodiness + BLOOD_AMOUNT_PER_DECAL), BLOOD_POOL_MAX)
+	blood_spew.transfer_mob_blood_dna(src) //give blood info to the blood decal.
 	if(temp_blood_DNA)
-		B.add_blood_DNA(temp_blood_DNA)
+		blood_spew.add_blood_DNA(temp_blood_DNA)
 
-/mob/living/carbon/human/add_splatter_floor(turf/T, small_drip)
+/mob/living/carbon/human/add_splatter_floor(turf/splatter_turf, small_drip)
 	if(!HAS_TRAIT(src, TRAIT_NOBLOOD))
-		..()
+		. = ..()
 
-/mob/living/carbon/alien/add_splatter_floor(turf/T, small_drip)
-	if(!T)
-		T = get_turf(src)
-	var/obj/effect/decal/cleanable/xenoblood/B = locate() in T.contents
-	if(!B)
-		B = new(T)
-	B.add_blood_DNA(list("UNKNOWN DNA" = "X*"))
+/mob/living/carbon/alien/add_splatter_floor(turf/splatter_turf, small_drip)
+	if(!splatter_turf)
+		splatter_turf = get_turf(src)
+	var/obj/effect/decal/cleanable/xenoblood/xeno_blood_splatter = locate() in splatter_turf.contents
+	if(!xeno_blood_splatter)
+		xeno_blood_splatter = new(splatter_turf)
+	xeno_blood_splatter.add_blood_DNA(list("UNKNOWN DNA" = "X*"))
 
-/mob/living/silicon/robot/add_splatter_floor(turf/T, small_drip)
-	if(!T)
-		T = get_turf(src)
-	var/obj/effect/decal/cleanable/oil/B = locate() in T.contents
-	if(!B)
-		B = new(T)
+/mob/living/silicon/robot/add_splatter_floor(turf/splatter_turf, small_drip)
+	if(!splatter_turf)
+		splatter_turf = get_turf(src)
+	var/obj/effect/decal/cleanable/oil/oil_splatter = locate() in splatter_turf.contents
+	if(!oil_splatter)
+		oil_splatter = new(splatter_turf)
 
 /mob/living/proc/get_blood_alcohol_content()
 	var/blood_alcohol_content = 0