Variable removed from city

src/engine/net/client/handlers/DestroyBuildingHandler.java

@@ -1,10 +1,10 @@
 package engine.net.client.handlers;
 
-import engine.mbEnums;
-import engine.mbEnums.BuildingGroup;
 import engine.InterestManagement.WorldGrid;
 import engine.exception.MsgSendException;
 import engine.gameManager.BuildingManager;
+import engine.mbEnums;
+import engine.mbEnums.BuildingGroup;
 import engine.net.client.ClientConnection;
 import engine.net.client.msg.ClientNetMsg;
 import engine.net.client.msg.DestroyBuildingMsg;
@@ -91,8 +91,9 @@ public class DestroyBuildingHandler extends AbstractClientMsgHandler {
             building.disableSpire(true);
 
         if (blueprint.getBuildingGroup() == BuildingGroup.WAREHOUSE) {
+
             if (city != null)
-                city.setWarehouseBuildingID(0);
+                city.warehouse = null;
         }
 
         BuildingManager.setRank(building, -1);