Merge r1225380:

Fix segfault when logging nameless, valueless cookie

PR: 52256
Reviewed by: Stefan Fritsch, Greg Ames, Eric Covener


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1227292 13f79535-47bb-0310-9956-ffa450edef68