OPENDJ-2349: fix deadlocks during subtree deletes and moddn

Matthew Swift

26.22.2015 f09c069e92d051036af2a969fe5289cb7c4826ba

 opendj-server-legacy/src/test/java/org/opends/server/backends/pluggable/DefaultIndexTest.java

@@ -170,6 +170,12 @@
        }

        @Override
        public void delete() throws NoSuchElementException, UnsupportedOperationException
        {
          it.remove();
        }

        @Override
        public boolean isDefined()
        {
          return current != null;