From cc33f8695bdbbb2869608a78f9fb298eddc8929b Mon Sep 17 00:00:00 2001
From: Joas Schilling <coding@schilljs.com>
Date: Mon, 19 Sep 2016 18:37:55 +0200
Subject: [PATCH] Make sure it is a function

Signed-off-by: Joas Schilling <coding@schilljs.com>
---
 core/js/js.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/js/js.js b/core/js/js.js
index f498ed751c0..efdb36187cd 100644
--- a/core/js/js.js
+++ b/core/js/js.js
@@ -1574,7 +1574,7 @@ OC.PasswordConfirmation = {
 				self.$form.addClass('hidden');
 				self.$background.addClass('hidden');
 
-				if (!_.isUndefined(self.callback)) {
+				if (_.isFunction(self.callback)) {
 					self.callback();
 				}
 			},