[Plugin: Better WP Security] SQL errror in function lockout()

Hello,
there is an SQL error in the function lockout() in secure.php when BWPS tries to ban an host:

$wpdb->insert(
	$wpdb->base_prefix . 'bwps_lockouts',
	array(
		'type' => $type,
		'active' => 1,
		'starttime' => $currtime,
		'exptime' => $exptime,
		'host' => $wpdb->escape( $_SERVER['REMOTE_ADDR'] ),
		'user' => ''
	)
);

the column user is defined as bigint(20) and an empty string is sent in the query.

The correct query should be :

$wpdb->insert(
	$wpdb->base_prefix . 'bwps_lockouts',
	array(
		'type' => $type,
		'active' => 1,
		'starttime' => $currtime,
		'exptime' => $exptime,
		'host' => $wpdb->escape( $_SERVER['REMOTE_ADDR'] ),
		'user' => 0
	)
);

or maybe you can try to send NULL ?

Could you confirm this is an error and fix it in the next release ?

Thank you for your answer

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