Adding to the field_data function for MySQL/MariaDB

[hanifigoktas]

If is_nullable is added, for required fields when creating dynamic forms

system\database\drivers\mysql\mysql_driver.php
$retval[$i]->is_nullable = (int) ($query[$i]->Null === ‘YES’);

system\database\drivers\mysql\mysql_result.php
$retval[$i]->is_nullable = mysql_field_type($this->is_nullable);

system\database\drivers\mysqli\mysql_driver.php
$retval[$i]->is_nullable = (int) ($query[$i]->Null === ‘YES’);

system\database\drivers\mysqli\mysql_result.php
$retval[$i]->is_nullable = mysql_field_type($this->is_nullable);