fix write out clusters

git-svn-id: svn+ssh://svn.internal.sanger.ac.uk/repos/svn/pathsoft/artemis/trunk@13786 ee4ac58c-ac51-4696-9907-e4b3aa274f04

uk/ac/sanger/artemis/chado/ClusterLazyQualifierValue.java

@@ -167,6 +167,8 @@ public class ClusterLazyQualifierValue implements LazyQualifierValue
       {
         FeatureRelationship fr = it.next();
         FeatureRelationship frBulk = hashFR.get(fr.getFeatureBySubjectId().getFeatureId());
+        if(frBulk == null)
+          continue;
         List<FeatureRelationship> frsForSbjtId = new Vector<FeatureRelationship>();
 
         Feature parent = frBulk.getFeatureByObjectId();