Close sockets on worker MPM when doing a graceless restart. This should

resolve some segfaults see when doing such restarts.

(Justin tweaked the palloc/memset in favor of calloc.)

Submitted by:	Aaron Bannert
Reviewed by:	Greg Ames, Sander Striker, Justin Erenkrantz


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@94886 13f79535-47bb-0310-9956-ffa450edef68