Further optimization to location_walk() and clean up unused variables.

  We will note the end result of the merge, and if remains the same through
  the second pass, we have nothing whatsoever to do :)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@90714 13f79535-47bb-0310-9956-ffa450edef68