CRM_Core_Form_Search assumes a checkbox. CiviGrant dashboard has none

CiviGrant Dashbaord (http://test.nyjew.org/civicrm/grant?reset=1) has Notice:
Notice: Undefined index: checkbox in CRM_Core_Form_Search->addRowSelectors() (line 131 of /home/xxxxx/public_html/test/sites/all/modules/civicrm/CRM/Core/Form/Search.php).

The search code assumes there is a checkbox but there is not. harmless, but could lead to other issues. Should not assume:
public function addRowSelectors($rows) {
$this->addElement('checkbox', 'toggleSelect', NULL, NULL, array('class' => 'select-rows'));
foreach ($rows as $row)

{ $this->addElement('checkbox', $row['checkbox'], NULL, NULL, array('class' => 'select-row')); }

}