avoid NPE

diff --git a/eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/combo/NameRelationshipTypeCombo.java b/eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/combo/NameRelationshipTypeCombo.java
index ddf7ec56ae52eb0670f12ff3b56cc8dc01e4573a..6315858fbecb4513be365085aa26cffadf04eeb6 100755 (executable)
--- a/eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/combo/NameRelationshipTypeCombo.java
+++ b/eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/combo/NameRelationshipTypeCombo.java
@@ -123,7 +123,9 @@ public class NameRelationshipTypeCombo<T extends InverseTermWrapper> extends Abs
     /** {@inheritDoc} */
     @Override
     public void widgetSelected(SelectionEvent e) {
-        wrapperSelection = (T) wrapperList.get(combo.getSelectionIndex());
+       if (combo.getSelectionIndex() > -1){
+               wrapperSelection = (T) wrapperList.get(combo.getSelectionIndex());
+       }
         firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));
     }