Correct URL failure reporting.

Drop the second reporting of HEAD over HTTP/0.9 requests, we short-circuit
this early now in read_request_line() when presented anything other than
the sole "GET" method permitted by spec.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1757921 13f79535-47bb-0310-9956-ffa450edef68