ap_run_sub_req does not return apr_status, so we shouldn't be checking

APR_STATUS_IS_EPIPE(). Also, remove the code that assumed the sub_req_lookup_uri
actually served up the content in the quick handler. We now call the quick_handler
in ap_run_sub_req()


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@94248 13f79535-47bb-0310-9956-ffa450edef68