Update signout-link.js

Author: OpakAlex

app/components/signout-link.js

@@ -4,13 +4,15 @@ export default Ember.Component.extend({
   currentUserObserver: function() {
     if(this.get('currentUser')){
       var currentUser = this.get('currentUser');
-      if(this.get('avatarAttribute')){
+      if(this.get('avatarAttribute.thumb_url')){
         this.setProperties({
           isAvatarPresent: !Ember.isEmpty(currentUser.get(this.get('avatarAttribute'))),
           avatarUrl: currentUser.get(this.get('avatarAttribute.thumb_url'))
         });
       }
-      this.set('username', currentUser.get(this.get('nameAttribute')));
+      if (this.get('nameAttribute')){
+        this.set('username', currentUser.get(this.get('nameAttribute')));
+      }
     }
   }.observes('currentUser'),
   actions:{