Merge r105663 from trunk:

* modules/ssl/ssl_engine_kernel.c (ssl_hook_UserCheck): Fix possible
NULL pointer dereference in some configurations.

PR: 31848
Reviewed by: jorton, wrowe, jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@125749 13f79535-47bb-0310-9956-ffa450edef68