Fix ProxyPass for ftp requests - the original code was segfaulting since

many of the values were not being filled out in the request_rec.

PR: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=57316
Submitted by: Tollef Fog Heen <tfheen@debian.org>, Thom May
Reviewed by: Andre' Malo


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@100671 13f79535-47bb-0310-9956-ffa450edef68