[ticket/14972] replace all occurrences of sizeof() with the count()

PHPBB3-14972

phpBB/includes/ucp/ucp_notifications.php

@@ -205,7 +205,7 @@ class ucp_notifications
 		}
 
 		$template->assign_vars(array(
-			strtoupper($block) . '_COLS' => sizeof($notification_methods) + 1,
+			strtoupper($block) . '_COLS' => count($notification_methods) + 1,
 		));
 	}