Remove default feed function when adding new function to hook. fixes #6970

git-svn-id: http://svn.automattic.com/wordpress/trunk@8179 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/rewrite.php

@@ -31,7 +31,8 @@ function add_feed($feedname, $function) {
 		$wp_rewrite->feeds[] = $feedname;
 	}
 	$hook = 'do_feed_' . $feedname;
-	remove_action($hook, $function, 10, 1);
+	// Remove default function hook
+	remove_action($hook, $hook, 10, 1);
 	add_action($hook, $function, 10, 1);
 	return $hook;
 }