added postcount to topic

src/categories.js

@@ -171,7 +171,9 @@ var async = require('async'),
 		category.name = validator.escape(category.name);
 		category.disabled = parseInt(category.disabled, 10) === 1;
 		category.icon = category.icon || 'hidden';
-		category.post_count = category.post_count || 0;
+		if (category.hasOwnProperty('post_count')) {
+			category.post_count = category.post_count || 0;
+		}
 
 		if (category.description) {
 			category.description = validator.escape(category.description);

src/posts/summary.js

@@ -105,7 +105,7 @@ module.exports = function(Posts) {
 	};
 
 	function getTopicAndCategories(topicKeys, callback) {
-		db.getObjectsFields(topicKeys, ['uid', 'tid', 'title', 'cid', 'slug', 'deleted'], function(err, topics) {
+		db.getObjectsFields(topicKeys, ['uid', 'tid', 'title', 'cid', 'slug', 'deleted', 'postcount'], function(err, topics) {
 			if (err) {
 				return callback(err);
 			}