more de-referencing

code/game/machinery/bots/bots.dm

@@ -109,7 +109,9 @@
 /obj/machinery/bot/Destroy()
 	aibots -= src
 	qdel(Radio)
+	Radio = null
 	qdel(botcard)
+	botcard = null
 	return ..()
 
 /obj/machinery/bot/proc/add_to_beacons(bot_filter) //Master filter control for bots. Must be placed in the bot's local New() to support map spawned bots.

code/game/machinery/bots/mulebot.dm

@@ -82,6 +82,9 @@ var/global/mulebot_count = 0
 	unload(0)
 	qdel(wires)
 	wires = null
+	if(cell)
+		qdel(cell)
+		cell = null
 	return ..()
 
 // attack by item

code/game/mecha/mech_bay.dm

@@ -116,6 +116,8 @@
 		recharge_console.voltage = MC * 10
 
 /obj/machinery/mech_bay_recharge_port/Destroy()
+	qdel(pr_recharger)
+	pr_recharger = null
 	recharge_console.recharge_port = null
 	recharge_floor.recharge_port = null
 	return ..()

code/game/objects/items/weapons/flamethrower.dm

@@ -25,10 +25,13 @@
 /obj/item/weapon/flamethrower/Destroy()
 	if(weldtool)
 		qdel(weldtool)
+		weldtool = null
 	if(igniter)
 		qdel(igniter)
+		igniter = null
 	if(ptank)
 		qdel(ptank)
+		ptank = null
 	return ..()
 
 

code/game/objects/items/weapons/grenades/smokebomb.dm

@@ -15,6 +15,7 @@
 
 	Destroy()
 		qdel(smoke)
+		smoke = null
 		return ..()
 
 	prime()

code/modules/examine/descriptions/engineering.dm

@@ -1,4 +1,4 @@
-/obj/machinery/power/supermatter
+/obj/machinery/power/supermatter_shard
 	description_info = "When energized by a laser (or something hitting it), it emits radiation and heat.  If the heat reaches above 7000 kelvin, it will send an alert and start taking damage. \
 	After integrity falls to zero percent, it will delaminate, causing a massive explosion, station-wide radiation spikes, and hallucinations. \
 	Supermatter reacts badly to oxygen in the atmosphere.  It'll also heat up really quick if it is in vacuum.<br>\

code/modules/mob/living/simple_animal/hostile/retaliate/drone.dm

@@ -161,7 +161,7 @@
 	..()
 	qdel(src)
 
-/mob/living/simple_animal/hostile/retaliate/malf_drone/Destroy()
+/mob/living/simple_animal/hostile/retaliate/malf_drone/Destroy() //Seriously, what the actual hell.
 	//some random debris left behind
 	if(has_loot)
 		var/datum/effect/effect/system/spark_spread/s = new /datum/effect/effect/system/spark_spread

code/modules/power/singularity/singularity.dm

@@ -45,6 +45,7 @@
 /obj/singularity/Destroy()
 	processing_objects.Remove(src)
 	singularities -= src
+	target = null
 	return ..()
 
 /obj/singularity/Move(atom/newloc, direct)

code/modules/power/supermatter/supermatter.dm

@@ -72,6 +72,7 @@
 /obj/machinery/power/supermatter_shard/Destroy()
 	investigate_log("has been destroyed.", "supermatter")
 	qdel(radio)
+	radio = null
 	return ..()
 
 /obj/machinery/power/supermatter_shard/proc/explode()
@@ -233,7 +234,7 @@
 
 /obj/machinery/power/supermatter_shard/attack_ai(mob/user as mob)
 	ui_interact(user)
-	
+
 /obj/machinery/power/supermatter_shard/attack_ghost(mob/user as mob)
 	ui_interact(user)
 
@@ -242,16 +243,16 @@
 		"<span class=\"danger\">You reach out and touch \the [src]. Everything starts burning and all you can hear is ringing. Your last thought is \"That was not a wise decision.\"</span>",\
 		"<span class=\"warning\">You hear an uneartly ringing, then what sounds like a shrilling kettle as you are washed with a wave of heat.</span>")
 
-	playsound(get_turf(src), 'sound/effects/supermatter.ogg', 50, 1)	
-		
+	playsound(get_turf(src), 'sound/effects/supermatter.ogg', 50, 1)
+
 	Consume(user)
-	
+
 /obj/machinery/power/supermatter_shard/proc/get_integrity()
 	var/integrity = damage / explosion_point
 	integrity = round(100 - integrity * 100)
 	integrity = integrity < 0 ? 0 : integrity
 	return integrity
-	
+
 // This is purely informational UI that may be accessed by AIs or robots
 /obj/machinery/power/supermatter_shard/ui_interact(mob/user, ui_key = "main", var/datum/nanoui/ui = null, var/force_open = 1)
 	var/data[0]