I was kinda hoping those (void)some_function() and (request_rec *)NULL

casts would go away before this committed, but alas I didn't say anything.
:-)  This gets rid of them and a few others just like them that I also
found in worker.c.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91082 13f79535-47bb-0310-9956-ffa450edef68