Clean up some of the warnings from a Tru64 build, mostly due to

the recent apr_ssize_t->apr_size_t changes.  The problem in mod_cgid
was an int function which didn't have a return statement.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86934 13f79535-47bb-0310-9956-ffa450edef68