SSDM-4187: Fix bug in GenericSampleEditForm.updateProjectField()

SVN: 37510

openbis/source/java/ch/systemsx/cisd/openbis/plugin/generic/client/web/client/application/sample/GenericSampleEditForm.java

@@ -163,7 +163,10 @@ public final class GenericSampleEditForm extends AbstractGenericSampleRegisterEd
         if (projectSamplesEnabled)
         {
             Project project = originalSample.getProject();
-            projectChooser.selectProjectAndUpdateOriginal(project.getIdentifier());
+            if (project != null)
+            {
+                projectChooser.selectProjectAndUpdateOriginal(project.getIdentifier());
+            }
         }
     }