Do not check the value of r->handler.

This allows the use of SetHandler for an entire directory, and since we already check via the stat structure if this is a directory, there is no reason for this extra check, which causes a regression since 1.3.

PR: 25435


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@233369 13f79535-47bb-0310-9956-ffa450edef68