Merge r1666998 from trunk:

core: Cleanup the request soon/even if some output filter fails to
handle the EOR bucket.

Submitted by: ylavic
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1681113 13f79535-47bb-0310-9956-ffa450edef68