解决编译bug

Myshipping.Application/Service/ExpressDelivery/ExpressDeliveryService.cs

@@ -461,12 +461,12 @@ namespace Myshipping.Application
         [HttpPost("CancelBooking")]
         public async Task<string> CancelBooking(long Id)
         {
-            var order = _orderRep.FirstOrDefault(x => x.Id == Id) ?? throw Oops.Bah("请选择正确数据！");
-            if (order.CurrentStateCode is "DJY01" or "DJY02")
+            var oldOrder = _orderRep.FirstOrDefault(x => x.Id == Id) ?? throw Oops.Bah("请选择正确数据！");
+            if (oldOrder.CurrentStateCode is "DJY01" or "DJY02")
             {
                 throw Oops.Bah("消单失败，原因：尚未下单，无需消单");
             }
-            if (order.CurrentStateCode is "DJY04")
+            if (oldOrder.CurrentStateCode is "DJY04")
             {
                 throw Oops.Bah("消单失败，原因：已消单，无需再次消单");
             }