TYPO3 Core

In one of my projects i want to store a persons sex.
I use a integer field. Value 1 = female, value 2 = male.

Here's the property in the model:

/**
 * sex
 *
 * @var integer
 * @validate NotEmpty, NumberRange(minimum=1,maximum=2)
 */
protected $sex;

Thing is, the "NumberRange" Validator doesn't cast the min/max options to integer. So the validator compares chars with integers.
So even if the property comes f.e. from a form with a value of 3, the isValid function returns no error.

the line

if ($value < $minimum || $value > $maximum) ...

results in

if ( 3 < '1' || 3 > '2' ) ...

Here's my quick&dirty fix in file extbase/Classes/Validation/Validator/NumberRangeValidator.php

if (isset($this->options['minimum'])) {
    $minimum = (int)$this->options['minimum'];
} elseif (isset($this->options['startRange'])) {
    $minimum = (int)$this->options['startRange'];
} else {
    $minimum = 0;
}
if (isset($this->options['maximum'])) {
    $maximum = (int)$this->options['maximum'];
} elseif (isset($this->options['endRange'])) {
    $maximum = (int)$this->options['endRange'];
} else {
    $maximum = PHP_INT_MAX;
}