From 670f650b99103bcea779f8ad0428e05cb7e37053 Mon Sep 17 00:00:00 2001
From: TJ VanToll <tj.vantoll@gmail.com>
Date: Thu, 20 Jun 2013 20:40:00 -0400
Subject: [PATCH] Menu: Ensure an event was passed before checking its type.
 Fixes #9384 - Menu: _focus function forgets null check with doing a pattern
 match on event.type

---
 ui/jquery.ui.menu.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ui/jquery.ui.menu.js b/ui/jquery.ui.menu.js
index 5e44e81c4..c0222629d 100644
--- a/ui/jquery.ui.menu.js
+++ b/ui/jquery.ui.menu.js
@@ -389,7 +389,7 @@ $.widget( "ui.menu", {
 		}
 
 		nested = item.children( ".ui-menu" );
-		if ( nested.length && ( /^mouse/.test( event.type ) ) ) {
+		if ( nested.length && event && ( /^mouse/.test( event.type ) ) ) {
 			this._startOpening(nested);
 		}
 		this.activeMenu = item.parent();