some minor cleanup in the async tree...

src/favourites.js

@@ -306,20 +306,22 @@ var async = require('async'),
 				function(count, next) {
 					results.postData.reputation = count;
 					posts.setPostField(pid, 'reputation', count, next);
-				},
+				}
-				function(next) {
+			], function(err) {
+				if (err) {
+					return callback(err);
+				}
+
 				plugins.fireHook('action:post.' + type, {
 					pid: pid,
 					uid: uid,
-					}, next);
+				});
-				},
+
-				function(next) {
+				callback(null, {
-					next(null, {
 					post: results.postData,
 					isFavourited: isFavouriting
 				});
-				}
+			});
-			], callback);
 		});
 	}