Follow-up to r1446169.  Fix bug reported here
http://svn.haxx.se/dev/archive-2013-03/0062.shtml

* subversion/libsvn_ra_svn/client.c
  (ra_svn_has_capability): Don't enter capability check block when the 
   requested capability *doesn't* match the current capability in the table.



git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1453095 13f79535-47bb-0310-9956-ffa450edef68