commit 01126ed4309794b60c1d15f80bd6e667e50ac628
Author: Joel Pittet <joel@pittet.ca>
Date:   Mon Apr 8 22:46:27 2013 -0700

    fixes

diff --git a/core/modules/aggregator/aggregator.module b/core/modules/aggregator/aggregator.module
index ccf9062..5ca6ea2 100644
--- a/core/modules/aggregator/aggregator.module
+++ b/core/modules/aggregator/aggregator.module
@@ -53,11 +53,7 @@ function aggregator_help($path, $arg) {
 function aggregator_theme() {
   return array(
     'aggregator_feed_source' => array(
-      'variables' => array(
-        'feed' => NULL,
-        'aggregator_feed' => NULL,
-        'view_mode' => NULL
-      ),
+      'variables' => array('aggregator_feed' => NULL, 'view_mode' => NULL),
       'file' => 'aggregator.pages.inc',
       'template' => 'aggregator-feed-source',
     ),
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index 8d3e897..f8b42fb 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -2127,8 +2127,8 @@ function node_feed($nids = FALSE, $channel = array()) {
     $item = new stdClass();
     $item->title = $node->label();
     $item->link = $node->link;
-    $feed->description = $item_text;
-    $feed->args = $node->rss_elements;
+    $item->description = $item_text;
+    $item->args = $node->rss_elements;
 
     $items[] = $item;
   }
@@ -2143,11 +2143,12 @@ function node_feed($nids = FALSE, $channel = array()) {
   $channel_extras = array_diff_key($channel, $channel_defaults);
   $channel = array_merge($channel_defaults, $channel);
 
-  return array(
+  $build = array(
     '#theme' => 'aggregator_page_rss',
     '#category' => (object) $channel,
     '#feeds' => $items,
   );
+  return $build;
 }
 
 /**