* mod_ssl: fix UID env var regression introduced in 2.2.15.

PR54510.

Submitted by: kbrand
Reviewed by: druggeri, wrowe


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1445112 13f79535-47bb-0310-9956-ffa450edef68