Better Destroys

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

@@ -16,6 +16,14 @@
 	var/list/loadedItems = list() //The items loaded into the cannon that will be fired out
 	var/pressureSetting = 1 //How powerful the cannon is - higher pressure = more gas but more powerful throws
 
+/obj/item/weapon/pneumatic_cannon/Destroy()
+	if(tank)
+		qdel(tank)
+		tank = null
+	for(var/obj/item/I in loadedItems)
+		qdel(I)
+	loadedItems.Cut()
+	return ..()
 
 /obj/item/weapon/pneumatic_cannon/examine(mob/user)
 	..()

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

@@ -23,6 +23,12 @@
 	update_icon()
 	return
 
+/obj/item/weapon/melee/baton/Destroy()
+	if(bcell)
+		qdel(bcell)
+		bcell = null
+	return ..()
+
 /obj/item/weapon/melee/baton/CheckParts(list/parts_list)
 	..()
 	bcell = locate(/obj/item/weapon/stock_parts/cell) in contents

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

@@ -35,6 +35,7 @@
 /obj/item/weapon/tank/Destroy()
 	if(air_contents)
 		qdel(air_contents)
+		air_contents = null
 
 	processing_objects.Remove(src)