From 58b37be5acf86913900b51d92eaa3cbb38b14f91 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Scott=20Gonz=C3=A1lez?= <scott.gonzalez@gmail.com>
Date: Mon, 15 Jun 2009 02:01:11 +0000
Subject: [PATCH] Widget factory: Make methods chainable if the return value is
 undefined.  Fixed #4601 (Allow undefined return value for chainable method
 calls).

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

diff --git a/ui/ui.core.js b/ui/ui.core.js
index fe2d228e3..eb0420c62 100644
--- a/ui/ui.core.js
+++ b/ui/ui.core.js
@@ -244,7 +244,7 @@ $.widget = function(name, prototype) {
 					methodValue = (instance && $.isFunction(instance[options])
 						? instance[options].apply(instance, args)
 						: instance);
-				if (methodValue !== instance) {
+				if (methodValue !== instance && methodValue !== undefined) {
 					returnValue = methodValue;
 					return false;
 				}