Fixed a NullPointerException that is causing the following error message: (...

Jean-Noel Rouvignac

03.48.2013 89c9a20d4fa66526a75ac6efe02340d9818c54b8

 opends/src/server/org/opends/server/replication/server/changelog/je/ChangeNumberIndexer.java

@@ -334,6 +334,10 @@
   */
  private CSN getPrecedingCSN(CSN csn)
  {
    if (csn == null)
    {
      return null;
    }
    if (csn.getSeqnum() > 0)
    {
      return new CSN(csn.getTime(), csn.getSeqnum() - 1, csn.getServerId());