From d1f97723e7beb2d0968e5479acf9d052c57d4f22 Mon Sep 17 00:00:00 2001
From: Aziz Khoury <bentael@gmail.com>
Date: Tue, 15 Jul 2014 13:32:21 -0400
Subject: [PATCH] Group.join() callback made optional

---
 src/groups.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/groups.js b/src/groups.js
index 0b495c2432..03b161c8eb 100644
--- a/src/groups.js
+++ b/src/groups.js
@@ -259,7 +259,9 @@
 	};
 
 	Groups.join = function(groupName, uid, callback) {
-		Groups.exists(groupName, function(err, exists) {
+		callback = callback || function() {};
+
+        Groups.exists(groupName, function(err, exists) {
 			if (exists) {
 				db.setAdd('group:' + groupName + ':members', uid, callback);
 			} else {