Fix the reset_filters function. If we set r->output_filters to NULL,

then we also have to reset the connection's filters.
Submitted by:	John Sterling <sterling@covalent.net>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@89269 13f79535-47bb-0310-9956-ffa450edef68