Eliminate an uninitialized variable from a buffer len.

PR: 6838
Submitted by:	Kelly Campbell <camk@channelpoint.com>
Reviewed by:	William Rowe


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@86945 13f79535-47bb-0310-9956-ffa450edef68