small fix

code/game/objects/items/storage/storage.dm

@@ -377,12 +377,12 @@ var/list/global/item_storage_box_cache = list()
 	return
 
 ///Returns TRUE if there is room for the given item. W_class_override allows checking for just a generic W_class, meant for checking shotgun handfuls without having to spawn and delete one just to check.
-/obj/item/storage/proc/has_room(obj/item/W as obj, W_class_override = null)
+/obj/item/storage/proc/has_room(obj/item/new_item, W_class_override = null)
 	if(storage_slots != null && contents.len < storage_slots)
 		return TRUE //At least one open slot.
 	//calculate storage space only for containers that don't have slots
 	if (storage_slots == null)
-		var/sum_storage_cost = W_class_override ? W_class_override : W.get_storage_cost() //Takes the override if there is one, the given item otherwise.
+		var/sum_storage_cost = W_class_override ? W_class_override : new_item.get_storage_cost() //Takes the override if there is one, the given item otherwise.
 		for(var/obj/item/I in contents)
 			sum_storage_cost += I.get_storage_cost() //Adds up the combined storage costs which will be in the storage item if the item is added to it.