Fix up some breakage/warnings detected by Win32 buildbot.
Fix up some breakage/warnings detected by Win32 buildbot.

* subversion/mod_dav_svn/mirror.c
  (dav_svn__location_in_filter, dav_svn__location_body_filter): Remove unused
  vars; adjust for dav_svn__get_special_uri rename.

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