Only set muc domain once connected

src/converse-muc.js

@@ -148,9 +148,10 @@
                 onConnected: function () {
                     var converse = this.__super__.converse;
                     this.__super__.onConnected.apply(this, arguments);
-
+                    if (!this.model.get('connected')) {
+                        return;
+                    }
                     if (_.isUndefined(converse.muc_domain)) {
-                        if (this.model.get('connected')) {
                         converse.features.off('add', this.featureAdded, this);
                         converse.features.on('add', this.featureAdded, this);
                         // Features could have been added before the controlbox was
@@ -161,7 +162,6 @@
                         if (feature) {
                             this.featureAdded(feature);
                         }
-                        }
                     } else {
                         this.setMUCDomain(converse.muc_domain);
                     }