Add Updates menu when plugin updates available

// In response to post at:
// http://wptavern.com/a-proposed-enhancement-that-saves-a-mouse-click-when-upgrading-wordpress-plugins
add_action('admin_menu', 'add_plugin_updates_menu');
function add_plugin_updates_menu() {
  $update_data = wp_get_update_data();

  // Add "Updates" menu item when plugin updates available.
  if($update_data['counts']['plugins'] > 0) {
    add_plugins_page( 'Not displayed', 'Updates', 'update_plugins', 'plugins.php?plugin_status=upgrade');
  }

  // Add "Pending" menu item when there are comments awaiting moderation.
  $awaiting_mod = wp_count_comments();
  $awaiting_mod = $awaiting_mod->moderated;
  if($awaiting_mod) {
    add_comments_page( 'Not displayed', 'Pending', 'moderate_comments', 'edit-comments.php?comment_status=moderated');
  }
}