e641e98 Bug 689537 - (cov#10610) Fix Coverity NULL pointer dereferences

Authored and Committed by nkinder 8 years ago
    Bug 689537 - (cov#10610) Fix Coverity NULL pointer dereferences
    
    The changelog import code releases the replica object when it is
    NULL, causing a NULL pointer dereference.  We should not be calling
    the release function if replica_obj is NULL.