mod_cgid: Eliminate a double-close of a socket. This resolves

various operational problems in a threaded MPM, since on the
second attempt to close the socket, the same descriptor was
often already in use by another thread for another purpose.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@100320 13f79535-47bb-0310-9956-ffa450edef68