Required arg in between optional ones

Signed-off-by: Rasmus Lerdorf <rasmus@php.net>
diff --git a/system/helpers/html_helper.php b/system/helpers/html_helper.php
index 80a2787..9990b46 100644
--- a/system/helpers/html_helper.php
+++ b/system/helpers/html_helper.php
@@ -109,7 +109,7 @@
 	 * @param	int
 	 * @return	string
 	 */
-	function _list($type = 'ul', $list, $attributes = '', $depth = 0)
+	function _list($type = 'ul', $list = array(), $attributes = '', $depth = 0)
 	{
 		// If an array wasn't submitted there's nothing to do...
 		if ( ! is_array($list))
@@ -399,4 +399,4 @@
 }
 
 /* End of file html_helper.php */
-/* Location: ./system/helpers/html_helper.php */
\ No newline at end of file
+/* Location: ./system/helpers/html_helper.php */