fix 2898 - public profile unauthed user

public/javascripts/app/views/stream_view.js

@@ -18,9 +18,11 @@ app.views.Stream = Backbone.View.extend({
     this.stream.bind("fetched", this.removeLoader, this)
     this.stream.bind("allPostsLoaded", this.unbindInfScroll, this)
     this.collection.bind("add", this.addPost, this);
+    if(window.app.user()) {
       app.user().bind("nsfwChanged", function() {
           _.map(this.postViews, function(view){ view.render() })
         }, this)
+    }
   },
 
   addPost : function(post) {