Check for NULL before attempting to update reg expiry.  refs #100292
Check for NULL before attempting to update reg expiry.  refs #100292

svartika/ccnx,cawka/ndnx,svartika/ccnx,cawka/ndnx,svartika/ccnx,svartika/ccnx,ebollens/ccnmp,svartika/ccnx,cawka/ndnx,cawka/ndnx,ebollens/ccnmp,ebollens/ccnmp,ebollens/ccnmp,cawka/ndnx,svartika/ccnx,svartika/ccnx