fix bug

@@ -145,7 +145,7 @@ public class ExpressInfoServiceImpl implements IExpressInfoService {
             throw new ServiceException(ServiceError.ORDER_NULL);
         }
         Integer orderStatus = buyerOrder.getStatus();
-        if ( orderStatus != targetOrderStatus.getCode()){
+        if ( orderStatus != expectOrderStatus.getCode()){
             LOGGER.warn("deliverToDepot order status changed , orderCode {} orderStatus {}", orderCode, orderStatus);
             throw new UfoServiceException(400, "订单状态已变更，不能发货");
         }