Converts Most Destroys to use QDEL_NULL

code/modules/mob/living/carbon/brain/MMI.dm

@@ -167,12 +167,8 @@
 	if(isrobot(loc))
 		var/mob/living/silicon/robot/borg = loc
 		borg.mmi = null
-	if(brainmob)
-		qdel(brainmob)
-		brainmob = null
-	if(held_brain)
-		qdel(held_brain)
-		held_brain = null
+	QDEL_NULL(brainmob)
+	QDEL_NULL(held_brain)
 	return ..()
 
 /obj/item/device/mmi/syndie

code/modules/mob/living/carbon/brain/brain_item.dm

@@ -123,7 +123,5 @@
 	icon_state = "scroll"
 
 /obj/item/organ/internal/brain/Destroy() //copypasted from MMIs.
-	if(brainmob)
-		qdel(brainmob)
-		brainmob = null
+	QDEL_NULL(brainmob)
 	return ..()

code/modules/mob/living/silicon/ai/ai.dm

@@ -246,7 +246,7 @@ var/list/ai_verbs_default = list(
 	ai_list -= src
 	shuttle_caller_list -= src
 	shuttle_master.autoEvac()
-	qdel(eyeobj) // No AI, no Eye
+	QDEL_NULL(eyeobj) // No AI, no Eye
 	malfhack = null
 	return ..()
 

code/modules/mob/living/silicon/robot/robot.dm

@@ -251,12 +251,10 @@ var/list/robot_verbs_default = list(
 		mmi = null
 	if(connected_ai)
 		connected_ai.connected_robots -= src
-	qdel(wires)
-	wires = null
-	qdel(module)
-	module = null
-	camera = null
-	cell = null
+	QDEL_NULL(wires)
+	QDEL_NULL(module)
+	QDEL_NULL(camera)
+	QDEL_NULL(cell)
 	return ..()
 
 /mob/living/silicon/robot/proc/pick_module()

code/modules/mob/living/silicon/robot/robot_modules.dm

@@ -35,8 +35,7 @@
 	for(var/module in modules)
 		qdel(module)
 	modules.Cut()
-	qdel(emag)
-	emag = null
+	QDEL_NULL(emag)
 	return ..()
 
 /obj/item/weapon/robot_module/proc/fix_modules()

code/modules/mob/living/simple_animal/bot/bot.dm

@@ -169,14 +169,11 @@
 /mob/living/simple_animal/bot/Destroy()
 	if(paicard)
 		ejectpai()
-	qdel(Radio)
-	Radio = null
-	qdel(access_card)
-	access_card = null
+	QDEL_NULL(Radio)
+	QDEL_NULL(access_card)
 	if(radio_controller && bot_filter)
 		radio_controller.remove_object(bot_core, control_freq)
-	qdel(bot_core)
-	bot_core = null
+	QDEL_NULL(bot_core)
 	return ..()
 
 /mob/living/simple_animal/bot/death(gibbed)
@@ -263,7 +260,7 @@
 		interact(H)
 	else
 		return ..()
-		
+
 /mob/living/simple_animal/bot/attack_ghost(mob/M)
 	interact(M)
 

code/modules/mob/living/simple_animal/bot/mulebot.dm

@@ -65,12 +65,8 @@
 
 /mob/living/simple_animal/bot/mulebot/Destroy()
 	unload(0)
-	if(wires)
-		qdel(wires)
-		wires = null
-	if(cell)
-		qdel(cell)
-		cell = null
+	QDEL_NULL(wires)
+	QDEL_NULL(cell)
 	return ..()
 
 /mob/living/simple_animal/bot/mulebot/proc/set_suffix(suffix)

code/modules/mob/living/simple_animal/hostile/bees.dm

@@ -295,8 +295,7 @@
 	queen = new(src)
 
 /obj/item/queen_bee/Destroy()
-	qdel(queen)
-	queen = null
+	QDEL_NULL(queen)
 	return ..()
 
 

code/modules/mob/living/simple_animal/hostile/megafauna/hierophant.dm

@@ -108,7 +108,7 @@ Difficulty: Hard
 		..()
 
 /mob/living/simple_animal/hostile/megafauna/hierophant/Destroy()
-	qdel(spawned_rune)
+	QDEL_NULL(spawned_rune)
 	. = ..()
 
 /mob/living/simple_animal/hostile/megafauna/hierophant/devour(mob/living/L)

code/modules/mob/living/simple_animal/hostile/megafauna/megafauna.dm

@@ -43,7 +43,7 @@
 	mouse_opacity = 2 // Easier to click on in melee, they're giant targets anyway
 
 /mob/living/simple_animal/hostile/megafauna/Destroy()
-	qdel(internal_gps)
+	QDEL_NULL(internal_gps)
 	. = ..()
 
 /mob/living/simple_animal/hostile/megafauna/death(gibbed)
@@ -77,7 +77,7 @@
 				OpenFire()
 		else
 			devour(L)
-			
+
 /mob/living/simple_animal/hostile/megafauna/onShuttleMove()
 	var/turf/oldloc = loc
 	. = ..()

code/modules/mob/mob_grab.dm

@@ -444,8 +444,7 @@
 		if(assailant.client)
 			assailant.client.screen -= hud
 		assailant = null
-	qdel(hud)
-	hud = null
+	QDEL_NULL(hud)
 	return ..()