Whoops - this patch is required by the last request.c change.

  Fulfills Brian Pane's suggestion that we always overallocate by one
  to make /foo/bar quickly convertable to /foo/bar/


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93047 13f79535-47bb-0310-9956-ffa450edef68