Radio buttons not send values from post forms if not selected or has not default value

[tgely]

PHP Notice: Undefined index: gender in \catalog\checkout_shipping_address.php on line 45

oscommerce2/catalog/checkout_shipping_address.php

Line 45 in de0e97d

if (ACCOUNT_GENDER == 'true') $gender = HTML::sanitize($_POST['gender']);

same issue is found here

oscommerce2/catalog/checkout_payment_address.php

Line 34 in de0e97d

if (ACCOUNT_GENDER == 'true') $gender = HTML::sanitize($_POST['gender']);