Merge r1835094 from trunk (follow up to 2.4.x's r1834321):

global ap_server_conf must be reset when process->pconf is cleared

Submitted by: covener
Reviewed by: covener, rpluem, ylavic


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1835175 13f79535-47bb-0310-9956-ffa450edef68