Harddel Fix Pack #42 + Better Live Reftracking Support (#63877)

* Hard Del Fixes, Ref Tracking Changes

code/modules/assembly/bomb.dm

@@ -13,6 +13,11 @@
 	var/obj/item/assembly_holder/bombassembly = null   //The first part of the bomb is an assembly holder, holding an igniter+some device
 	var/obj/item/tank/bombtank = null //the second part of the bomb is a plasma tank
 
+/obj/item/onetankbomb/Destroy()
+	bombassembly = null
+	bombtank = null
+	return ..()
+
 /obj/item/onetankbomb/IsSpecialAssembly()
 	return TRUE
 

code/modules/assembly/holder.dm

@@ -19,6 +19,18 @@
 	var/static/rotation_flags = ROTATION_ALTCLICK | ROTATION_CLOCKWISE | ROTATION_COUNTERCLOCKWISE | ROTATION_FLIP | ROTATION_VERBS
 	AddComponent(/datum/component/simple_rotation, rotation_flags)
 
+/obj/item/assembly_holder/Destroy()
+	QDEL_NULL(a_left)
+	QDEL_NULL(a_right)
+	return ..()
+
+/obj/item/assembly_holder/Exited(atom/movable/gone, direction)
+	. = ..()
+	if(gone == a_left)
+		a_left = null
+	else if(gone == a_right)
+		a_right = null
+
 /obj/item/assembly_holder/IsAssemblyHolder()
 	return TRUE