topics will no longer show up in /recent if user cannot access them

src/topics.js

@@ -262,9 +262,20 @@ var async = require('async'),
 				return;
 			}
 
-			Topics.getTopicsByTids(tids, current_user, function(topicData) {
-				latestTopics.topics = topicData;
-				callback(err, latestTopics);
+			// Filter out topics that belong to categories that this user cannot access
+			async.filter(tids, function(tid, next) {
+				threadTools.privileges(tid, current_user, function(err, privileges) {
+					if (!err && privileges.read) {
+						next(true);
+					} else {
+						next(false);
+					}
+				});
+			}, function(tids) {
+				Topics.getTopicsByTids(tids, current_user, function(topicData) {
+					latestTopics.topics = topicData;
+					callback(err, latestTopics);
+				});
 			});
 		});
 	}