From 2f39098cabd934165d3282a811b1fc485900e00d Mon Sep 17 00:00:00 2001
From: Juanma Serrano <joimpoke@gmail.com>
Date: Tue, 31 Mar 2015 17:56:04 +0200
Subject: [PATCH] Fix possible crash in User.prototype.can

It crashed if groupData was not found if User object has no group and the user is not in a room.
---
 users.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/users.js b/users.js
index 900cc8c604..2c39d83a53 100644
--- a/users.js
+++ b/users.js
@@ -615,7 +615,7 @@ User = (function () {
 
 		if (typeof target === 'string') targetGroup = target;
 
-		if (groupData[permission]) {
+		if (groupData && groupData[permission]) {
 			var jurisdiction = groupData[permission];
 			if (!target) {
 				return !!jurisdiction;