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

src/topics.js

@@ -262,11 +262,22 @@ var async = require('async'),
 				return;
 			}
 
+			// 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);
 				});
 			});
+		});
 	}
 
 	Topics.getTotalUnread = function(uid, callback) {