Merge pull request #424 from saruman/patch-5

Wrong type of param

system/classes/Kohana/Route.php

@@ -381,7 +381,7 @@ class Kohana_Route {
 	 * [!!] Default parameters are added before filters are called!
 	 *
 	 * @throws  Kohana_Exception
-	 * @param   array   $callback   callback string, array, or closure
+	 * @param   mixed   $callback   callback string, array, or closure
 	 * @return  $this
 	 */
 	public function filter($callback)