update inventory after resource purchase

src/engine/net/client/ClientMessagePump.java

@@ -1588,6 +1588,7 @@ public class ClientMessagePump implements NetMsgHandler {
                 DbManager.ItemQueries.UPDATE_NUM_ITEMS(buy,buy.getNumOfItems());
             }
         }
+        itemMan.updateInventory();
     }
     private static void Repair(RepairMsg msg, ClientConnection origin) {