修复bug

src/WMS.Web.Repositories/OutStockTaskRepositories.cs

@@ -283,6 +283,7 @@ namespace WMS.Web.Repositories
             //序列码出库单
             if (dto.SerialNumbers != null && dto.SerialNumbers.Count() > 0)
             {
+                taskIds = new List<int>();
                 var res = await _outStockRepositories.GetEntityListBySerialNumbers(dto.SerialNumbers);
                 taskIds.AddRange(res.Select(s => s.TaskId));
             }
@@ -292,7 +293,10 @@ namespace WMS.Web.Repositories
                 var res = await _outStockRepositories.GetEntityListByBoxBillNos(dto.BoxBillNos);
                 //要跟上面的序列码搜索取交集
                 if (taskIds == null)
+                {
+                    taskIds = new List<int>();
                     taskIds.AddRange(res.Select(s => s.TaskId));
+                }
                 else
                     taskIds = res.Select(s => s.TaskId).Intersect(taskIds).ToList();
             }