Merge r578620 from trunk:

PR 40037: try to avoid risk of misleading the lusers when they
can't initialise scoreboard after a crash.

Submitted by: niq
Reviewed by: niq, rpluem, trawick


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@582621 13f79535-47bb-0310-9956-ffa450edef68