Stores do not loose existing items when restocking

git-svn-id: http://svn.net-core.org/repos/t-engine4@6147 51575b47-30f0-44d4-a5cc-537603b46e54

game/engines/default/engine/Store.lua

@@ -64,8 +64,8 @@ function _M:loadup(level, zone, force_nb)
 
 	for i = #inven, 1, -1 do
 		local e = inven[i]
-		inven[i] = nil
 		if (s.empty_before_restock and not e.__store_forget) or (e.__force_store_forget) then
+			table.remove(inven, i)
 			e:removed()
 		end
 	end