Close PR 50861 where enabling and disabling of buffered

logs can cause a segfault. Patch by: Torsten Förtsch <torsten.foertsch@gmx.net>

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1082518 13f79535-47bb-0310-9956-ffa450edef68