Clean up isapi_load, removing the request_rec arg [which we never need],
  and using the given server and request rather than deref'ing r->server
  [which segfaulted ISAPILoadModule in the 1.73 rev.]

Reported by: Sebastian Hantsch


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@95187 13f79535-47bb-0310-9956-ffa450edef68