Follow-up to r1079508, fixing what is surely a SEGFAULT in the making.
Follow-up to r1079508, fixing what is surely a SEGFAULT in the making.

* subversion/libsvn_client/deprecated.c
  (downgrade_commit_copied_notify_func): Don't try to call a NULL function.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion