修改计算超期天数Bug

src/Hotline.Share/Dtos/Order/OrderDto.cs

@@ -412,7 +412,7 @@ namespace Hotline.Share.Dtos.Order
         private string DaysOverdueText()
         {
             DateTime? dateTime = DateTime.Now;
-            if (Status >= EOrderStatus.Filed)
+            if (Status >= EOrderStatus.Filed && ExpiredTime.HasValue && FiledTime.HasValue)
             {
                 var days = (FiledTime.Value - ExpiredTime.Value).TotalDays;
                 return $"超期{days:N1}天";