Description:
------------
PHP crashes if there is no PDO_Type of param

Reproduce code:
---------------
$pdo = new PDO("mysql:host=localhost;dbname=[base];",'[user]','[pass]');

$sth = $pdo->prepare("SELECT * FROM lng WHERE lng_id=:Id");
$id = 1;

//causes PHP crash
$sth->execute(array(':Id'=>$id));
//OR
//$sth->bindParam(':Id',$id);$sth->execute();

//works fine:
//$sth->bindValue(':Id',$id,PDO::PARAM_INT);
//$sth->execute();

die('OK');

Expected result:
----------------
OK

Actual result:
--------------
PHP CGI/FastCGI crash