County Edit in CiviCRM Profile

when we edit the contact county detail via profile it is changing the Civi record , but when we editing the same record via profile it is not pre selected on county drop down.

CRM/Contact/BAO/Query.php
Line 1065
array('pseudoField' => '{$pf}_id', 'idCol' => "{$tName}_id", 'bao' => 'CRM_Core_BAO_Address');

'{$pf}_id' should be in double quote.("{$pf}_id")
this will fix the issue.