Fixed job requisition panel being populated with empty Job.ID

prs.desktop/Panels/Jobs/JobRequisitionGrid.cs

@@ -145,7 +145,14 @@ namespace PRSDesktop
             if (!Security.IsAllowed<CanApproveJobRequisitions>())
                 criteria.Add(new Filter<JobRequisition>(x => x.Approved).IsNotEqualTo(DateTime.MinValue));
 
-            criteria.Add(new Filter<JobRequisition>(x => x.Job.ID).IsEqualTo(Job.ID));
+            if(Job.ID != Guid.Empty)
+            {
+                criteria.Add(new Filter<JobRequisition>(x => x.Job.ID).IsEqualTo(Job.ID));
+            }
+            else
+            {
+                criteria.Add(new Filter<JobRequisition>(x => x.Job.ID).None());
+            }
 
             base.Reload(criteria, columns, ref sort, action);
         }