Follow-up to r33013, correct XFailing test expectations (again).
Follow-up to r33013, correct XFailing test expectations (again).

* subversion/tests/cmdline/merge_tests.py
  (natural_history_filtering): Expect a property upate on the merge target.

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