Follow-up to r1336783.
Follow-up to r1336783.

* subversion/tests/cmdline/revert_tests.py
  (revert_nonexistent): Fix the decorator, improve verification.

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