考勤类型缺失避免报错

performance/Performance.Services/AttendanceService.cs

@@ -566,7 +566,7 @@ public ApiResponse<List<RecordAttendcance>> GetAttendanceVacation(int allotId)
                            HospitalId = a.HospitalId,
                            PersonnelName = a.PersonnelName,
                            PersonnelNumber = a.PersonnelNumber,
-                           AttendanceName = tt.AttendanceName,
+                           AttendanceName = tt?.AttendanceName ?? "考勤类型缺失",
                            TypeId = a.TypeId,
                            BegDate = a.BegDate,
                            EndDate = a.EndDate,