* subversion/include/svn_config.h
  (svn_config_walk_auth_data): Fix a small oversight from r1466183, which
   renamed the cleanup_func paramter to walk_func but didn't update the
   docstring accordingly.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1572572 13f79535-47bb-0310-9956-ffa450edef68