Switches around turf/datum garbage handling (my fault..). Adds null check for zone rebuilds.

code/ZAS/Turf.dm

@@ -102,7 +102,7 @@
 			//This happens when windows move or are constructed. We need to rebuild.
 			if((previously_open & d) && istype(unsim, /turf/simulated))
 				var/turf/simulated/sim = unsim
-				if(sim.zone == zone)
+				if(zone && sim.zone == zone)
 					zone.rebuild()
 					return
 

code/controllers/Processes/garbage.dm

@@ -85,10 +85,10 @@ var/datum/controller/process/garbage_collector/garbage_collector
 			A.finalize_qdel()
 
 /datum/proc/finalize_qdel()
-	del(src)
+	garbage_collector.AddTrash(src)
 
 /turf/finalize_qdel()
-	garbage_collector.AddTrash(src)
+	del(src)
 
 // Default implementation of clean-up code.
 // This should be overridden to remove all references pointing to the object being destroyed.

code/game/objects/buckling.dm

@@ -84,3 +84,12 @@
 				"<span class='notice'>You hear metal clanking.</span>")
 		add_fingerprint(user)
 	return M
+
+//Cleanup
+/obj/Destroy()
+	. = ..()
+	unbuckle_mob()
+
+/obj/Del()
+	. = ..()
+	unbuckle_mob()

code/modules/power/singularity/act.dm

@@ -40,8 +40,7 @@
 /obj/singularity_act()
 	ex_act(1)
 	if(src)
-		spawn(0)
+		qdel(src)
-			qdel(src)
 	return 2
 
 /obj/singularity_pull(S, current_size)
@@ -72,6 +71,7 @@
 	return
 
 /obj/machinery/power/supermatter/shard/singularity_act()
+	src.loc = null
 	qdel(src)
 	return 5000
 
@@ -83,8 +83,8 @@
 	SetUniversalState(/datum/universal_state/supermatter_cascade)
 	log_admin("New super singularity made by eating a SM crystal [prints]. Last touched by [src.fingerprintslast].")
 	message_admins("New super singularity made by eating a SM crystal [prints]. Last touched by [src.fingerprintslast].")
-	spawn(0)
+	src.loc = null
-		qdel(src)
+	qdel(src)
 	return 50000
 
 /obj/item/projectile/beam/emitter/singularity_pull()