A very small optimization to the OLD_WRITE logic. This just makes us store

a pointer to the OLD_WRITE frec, and instead of using strcmp or strcasecmp,
we can just do a simple pointer comparison.  This optimization is also
available to other modules.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91006 13f79535-47bb-0310-9956-ffa450edef68