Description:
------------
Reflection getType function doesn't return a type

Test script:
---------------
function someFunction(string $param, int $param2 = null) {}

$reflectionFunc = new ReflectionFunction('someFunction');
$reflectionParams = $reflectionFunc->getParameters();

var_dump($reflectionParams[0]->hasType());
echo '<br>';
var_dump($reflectionParams[1]->hasType());
echo '<br>';
var_dump($reflectionParams[0]->getType());
echo '<br>';
var_dump($reflectionParams[1]->getType());

Expected result:
----------------
bool(true)
bool(true)
string
int

Actual result:
--------------
bool(true)
bool(true)
class ReflectionNamedType#4 (0) { }
class ReflectionNamedType#4 (0) { }