Merge pull request #6764 from Citadel-Station-13/upstream-merge-37839

[MIRROR] Fixes minor cleanbot runtime.

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

@@ -148,9 +148,14 @@
 		if(loc == get_turf(target))
 			if(!(check_bot(target) && prob(50)))	//Target is not defined at the parent. 50% chance to still try and clean so we dont get stuck on the last blood drop.
 				UnarmedAttack(target)	//Rather than check at every step of the way, let's check before we do an action, so we can rescan before the other bot.
+				if(QDELETED(target)) //We done here.
+					target = null
+					mode = BOT_IDLE
+					return
 			else
 				shuffle = TRUE	//Shuffle the list the next time we scan so we dont both go the same way.
 			path = list()
+		
 		if(!path || path.len == 0) //No path, need a new one
 			//Try to produce a path to the target, and ignore airlocks to which it has access.
 			path = get_path_to(src, target.loc, /turf/proc/Distance_cardinal, 0, 30, id=access_card)