set_content_length() needs to use the value passed in.

Reviewed by: Brian Behlendorf, Alexei Kosut
Submitted by: Paul Sutton <paul@ukweb.com>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@76667 13f79535-47bb-0310-9956-ffa450edef68