mod_cgid: fix a hash table corruption problem which could

result in the wrong script being cleaned up at the end of a
request.

Unique storage was not used for the key, as the code assumed
incorrectly that apr_hash_set() made a copy of the key.  Thus,
when the script pid was looked up at the end of the request,
some other script's pid could be found.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@101374 13f79535-47bb-0310-9956-ffa450edef68