Merge branch 'dev' of http://123.60.180.165:4647/ZZYDOP/DOPCore into dev

MicroServices/Business/Business.Application/ResourceExamineManagement/ProductionScheduleAppService.cs

@@ -402,7 +402,8 @@ namespace Business.ResourceExamineManagement
                         sumTimes = CalcTimeMins(curRecord.StartTime, scheTime, item.ProdLine);
                     }
                 }
-                else {
+                else if(curOp.Last != null)
+                {
                     //工单有报工记录，取最新报工时间到当前时间的有效时长
                     sumTimes = CalcTimeMins(curOp.Last.GetValueOrDefault(), scheTime, item.ProdLine);
                 }
@@ -908,7 +909,7 @@ namespace Business.ResourceExamineManagement
                                 sumWorkTimes = CalcTimeMins(curRecord.StartTime, workStartTime, item.ProdLine);
                             }
                         }
-                        else
+                        else if(curOp.Last != null)
                         {
                             //工单有报工记录，取最新报工时间到当前时间的有效时长
                             sumWorkTimes = CalcTimeMins(curOp.Last.GetValueOrDefault(), workStartTime, item.ProdLine);