gotto check read after each pass

src/topics/unread.js

@@ -49,6 +49,10 @@ module.exports = function(Topics) {
 						return !read[index];
 					});
 
+					privileges.topics.filter('read', newtids, uid, function(err, newtids) {
+						if (err) {
+							return next(err);
+						}
 						unreadTids.push.apply(unreadTids, newtids);
 
 						start = stop + 1;
@@ -57,11 +61,9 @@ module.exports = function(Topics) {
 						next();
 					});
 				});
+			});
 		}, function(err) {
-			if (err) {
+			callback(err, unreadTids);
-				return callback(err);
-			}
-			privileges.topics.filter('read', unreadTids, uid, callback);
 		});
 	};