Patch by: Marcus Comstedt <marcus@mc.pp.se>
Patch by: Marcus Comstedt <marcus@mc.pp.se>

* libsvn_ra_dav/session.c (get_server_settings): don't try passing a
    NULL cfg to svn_config_find_group.

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