backport this from 2.1-dev:

  Small fix to allow reverse proxying to an ftp server. Previously
  an attempt to do this would try and connect to 0.0.0.0, regardless
  of the server specified.

PR:            24922
Submitted by:  Pascal Terjan <pterjan@linuxfr.org>
Reviewed by:   minfrin, nd, jim, trawick

(note: this commit includes minor style-only repairs to the
original patch; see r1.144 of proxy_ftp.c)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@104149 13f79535-47bb-0310-9956-ffa450edef68