Setting city when loading

src/engine/db/handlers/dbWarehouseHandler.java

@@ -115,6 +115,7 @@ public class dbWarehouseHandler extends dbHandlerBase {
                 JSONObject jsonObject = (JSONObject) jsonParser.parse(rs.getString("warehouse"));
                 City city = City.getCity(cityUID);
                 city.warehouse = new Warehouse(jsonObject);
+                city.warehouse.city = city;
 
                 // Locate warehouse building
                 for (Building building : city.parentZone.zoneBuildingSet) {