commit ed229c34ea21f032cbbd7461fca2ee36fb694d95
Author: Joel Pittet <joel@pittet.ca>
Date:   Fri May 10 21:21:42 2013 -0700

    fixes

diff --git a/core/modules/forum/forum.module b/core/modules/forum/forum.module
index 0ffb472..0e4523a 100644
--- a/core/modules/forum/forum.module
+++ b/core/modules/forum/forum.module
@@ -1192,30 +1192,28 @@ function template_preprocess_forum_topic_list(&$variables) {
 function template_preprocess_forum_icon(&$variables) {
   $variables['hot_threshold'] = config('forum.settings')->get('topics.hot_threshold');
 
-  $variables['attributes']['class'][] = 'icon';
   if ($variables['num_posts'] > $variables['hot_threshold']) {
-    $variables['attributes']['class'][] = $variables['new_posts'] ? 'hot-new' : 'hot';
+    $icon_status_class = $variables['new_posts'] ? 'hot-new' : 'hot';
     $variables['icon_title'] = $variables['new_posts'] ? t('Hot topic, new comments') : t('Hot topic');
   }
   else {
-    $variables['attributes']['class'][] = $$variables['new_posts'] ? 'new' : 'default';
+    $icon_status_class = $variables['new_posts'] ? 'new' : 'default';
     $variables['icon_title'] = $variables['new_posts'] ? t('New comments') : t('Normal topic');
   }
 
   if ($variables['comment_mode'] == COMMENT_NODE_CLOSED || $variables['comment_mode'] == COMMENT_NODE_HIDDEN) {
-    $variables['attributes']['class'][] = 'closed';
+    $icon_status_class = 'closed';
     $variables['icon_title'] = t('Closed topic');
   }
 
   if ($variables['sticky'] == 1) {
-    $variables['attributes']['class'][] = 'sticky';
+    $icon_status_class = 'sticky';
     $variables['icon_title'] = t('Sticky topic');
   }
 
-  $variables['attributes']['title'] = $variables['icon_title'];
-
   $variables['attributes']['class'][] = 'icon';
-  $variables['attributes']['class'][] = 'topic-status-' . $variables['icon_class'];
+  $variables['attributes']['class'][] = 'topic-status-' . $icon_status_class;
+  $variables['attributes']['title'] = $variables['icon_title'];
 }
 
 /**