app.user undefined on cold load

public/src/client/topic.js

@@ -58,7 +58,7 @@ define('forum/topic', [
 
 		$(window).trigger('action:topic.loaded');
 
-		if (app.user.uid) {
+		if (app.uid) {
 			socket.emit('topics.enter', tid, function(err, data) {
 				if (err) {
 					return app.alertError(err.message);

public/src/client/topic/posts.js

@@ -140,7 +140,7 @@ define('forum/topic/posts', [
 			pids.push(posts[i].pid);
 		}
 
-		if (app.user.uid) {
+		if (app.uid) {
 			socket.emit('posts.getPrivileges', pids, function(err, privileges) {
 				if(err) {
 					return app.alertError(err.message);