Follow-up to r140184: Fix repositories list authorization check when 
SVNPathzAuthz short_circuit and AuthzSVNReposRelativeAccessFile used
together.

* subversion/mod_dav_svn/authz.c
  (dav_svn__allow_list_repos): Do not use short_circuit mode: bypass 
   provider expects R to be request to the repository to find 
   repository relative authorization file.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1428793 13f79535-47bb-0310-9956-ffa450edef68