Fixes issue with muc join

modules/xmpp/ChatRoom.js

@@ -117,8 +117,9 @@ ChatRoom.prototype.join = function (password) {
     if(password)
         this.password = password;
     var self = this;
-    this.moderator.allocateConferenceFocus(function () {});
-    self.sendPresence(true);
+    this.moderator.allocateConferenceFocus(function () {
+        self.sendPresence(true);
+    });
 };
 
 ChatRoom.prototype.sendPresence = function (fromJoin) {