Backports: r1392347

Submitted by: trawick
core: ErrorDocument now works for requests without a Host header.
PR: 48357


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x-merge-http-strict@1775711 13f79535-47bb-0310-9956-ffa450edef68