Merge pull request #7554 from SamHPurp/more-qdel-nulls

Uses more QDEL_NULLs

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

@@ -350,8 +350,7 @@
 					H.key = ghost.key
 					log_runtime(EXCEPTION("Ghost of name [ghost.name] is bound to [H.real_name], but lacks a client. Deleting ghost."), src)
 
-					qdel(ghost)
-					ghost = null
+					QDEL_NULL(ghost)
 				var/tplus = world.time - H.timeofdeath
 				var/tlimit = 1800 //past this much time the patient is unrecoverable (in deciseconds)
 				var/tloss = 600 //brain damage starts setting in on the patient after some time left rotting
@@ -500,8 +499,7 @@
 					H.key = ghost.key
 					log_runtime(EXCEPTION("Ghost of name [ghost.name] is bound to [H.real_name], but lacks a client. Deleting ghost."), H)
 
-					qdel(ghost)
-					ghost = null
+					QDEL_NULL(ghost)
 				var/tplus = world.time - H.timeofdeath
 				var/tlimit = 1800 //past this much time the patient is unrecoverable (in deciseconds)
 				var/tloss = 600 //brain damage starts setting in on the patient after some time left rotting

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

@@ -241,8 +241,7 @@
 /obj/item/weapon/wirecutters/attack(mob/living/carbon/C, mob/user)
 	if(istype(C) && C.handcuffed && istype(C.handcuffed, /obj/item/weapon/restraints/handcuffs/cable))
 		user.visible_message("<span class='notice'>[user] cuts [C]'s restraints with [src]!</span>")
-		qdel(C.handcuffed)
-		C.handcuffed = null
+		QDEL_NULL(C.handcuffed)
 		if(C.buckled && C.buckled.buckle_requires_restraints)
 			C.buckled.unbuckle_mob(C)
 		C.update_handcuffed()