fix tag update

was hanging on tag remove, and wasnt updating if tag count didnt change

public/src/client/topic/events.js

@@ -107,7 +107,7 @@ define('forum/topic/events', ['forum/topic/browsing', 'forum/topic/postTools', '
 			$(window).trigger('action:posts.edited');
 		});
 
-		if (data.tags && data.tags.length !== $('.tags').first().children().length) {
+		if (data.tags && tagsUpdated(data.tags)) {
 			templates.parse('partials/post_bar', 'tags', {tags: data.tags}, function(html) {
 				var tags = $('.tags');
 
@@ -118,6 +118,19 @@ define('forum/topic/events', ['forum/topic/browsing', 'forum/topic/postTools', '
 		}
 	}
 
+	function tagsUpdated(tags) {
+		if (tags.length !== $('.tags').first().children().length) {
+			return true;
+		}
+
+		for (var i=0; i<tags.length; ++i) {
+			if (!$('.tags .tag-item[data-tag="' + tags[i].value + '"]').length) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 	function onPostPurged(pid) {
 		$('#post-container li[data-pid="' + pid + '"]').fadeOut(500, function() {
 			$(this).remove();

src/topics/tags.js

@@ -64,9 +64,11 @@ module.exports = function(Topics) {
 	function updateTagCount(tag, callback) {
 		callback = callback || function() {};
 		Topics.getTagTopicCount(tag, function(err, count) {
-			if (!err && count) {
-				db.sortedSetAdd('tags:topic:count', count, tag, callback);
+			if (err || !count) {
+				return callback(err);
 			}
+
+			db.sortedSetAdd('tags:topic:count', count, tag, callback);
 		});
 	}