SECURITY: CVE-2010-0425 (cve.mitre.org)

      mod_isapi: Do not unload an isapi .dll module until the request
processing is completed, avoiding orphaned callback pointers.

Submitted by: Brett Gervasoni <brettg senseofsecurity.com>, trawick
Reviewed by: trawick, wrowe
Backports: r917870


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@917871 13f79535-47bb-0310-9956-ffa450edef68