Fix a problem in get_path_info() which would allow a very long URL with

many '/' characters to convince the server to return an index for the
DocumentRoot. Properly check errno for stat().
Reviewed by: Randy Terbush, Ben Laurie
Submitted by: Marc Slemko


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3@77418 13f79535-47bb-0310-9956-ffa450edef68