Correct mod_autoindex's test of the query string's requested ordering.
  This patch is a bit more paranoid than Kestutis's, but this is user
  supplied input, so a bit of paranoia is healthy.

PR: 8771
Submitted by:	Kestutis Kupciunas <kesha@soften.ktu.lt>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@92017 13f79535-47bb-0310-9956-ffa450edef68