Makes windows and grilles garbage collect. This will make fires a LOT less laggy. And singularities a bit.

code/game/objects/structures/grille.dm

@@ -12,6 +12,8 @@
 	var/health = 10
 	var/destroyed = 0
 
+/obj/structure/grille/Del()
+	loc = null //garbage collect
 
 /obj/structure/grille/ex_act(severity)
 	del(src)

code/game/objects/structures/window.dm

@@ -283,7 +283,7 @@
 	air_update_turf(1)
 	playsound(src, "shatter", 70, 1)
 	update_nearby_icons()
-	..()
+	loc = null //garbage collect
 
 
 /obj/structure/window/Move()