Ticket #529 - dn normalization must handle multiple space characters in attributes
    
    Description: commit 69ff83598d517bed84922b1c7dd67cab023b4d99
    introduced 2 coverity defects:
      13162: Resource leak
             Free allocated strings: newrdn and parentdn
      13163: Unused pointer value
             Removed unused pointer "p"
    
    https://fedorahosted.org/389/ticket/529
    
    Reviewed by Rich (Thank you!!)
    (cherry picked from commit 77e61a80d56da6fe8a9dd56c6c29acb86032e131)