fix double quote bug.

PR: 4058
Submitted by: James Cloos <cloos@jhcloos.com>
Reviewed by: Ralf, Lars


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@82917 13f79535-47bb-0310-9956-ffa450edef68