Typo prints incorrect HTML entity, &nbsp instead of  

On line 242 of webform/components/grid.inc

  $row[] = array('data' => '&nbsp', 'class' => 'checkbox webform-grid-option');

is missing a semicolon after the &nbsp

I've attached a patch.

--- modules/webform/components/grid.inc
+++ modules/webform/components/grid.inc
@@ -242,7 +242,7 @@
           $row[] = array('data' => '<strong>X</strong>', 'class' => 'checkbox webform-grid-option');
         }
         else {
-          $row[] = array('data' => '&nbsp', 'class' => 'checkbox webform-grid-option');
+          $row[] = array('data' => '&nbsp;', 'class' => 'checkbox webform-grid-option');
         }
       }
       $rows[] = $row;