Index: includes/theme.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/theme.inc,v
retrieving revision 1.410
diff -u -r1.410 theme.inc
--- includes/theme.inc	15 Jan 2008 10:43:00 -0000	1.410
+++ includes/theme.inc	16 Jan 2008 00:02:46 -0000
@@ -1429,7 +1429,7 @@
       if ($i == $num_items - 1) {
         $attributes['class'] = empty($attributes['class']) ? 'last' : ($attributes['class'] .' last');
       }
-      $output .= '<li'. drupal_attributes($attributes) .'>'. $data .'</li>';
+      $output .= '<li'. drupal_attributes($attributes) .'>'. $data .'</li>' ."\n";
     }
     $output .= "</$type>";
   }