Description:
------------
If a parameter passed by reference to a function is assigned a new object with the =& operator, after the function call the variable passed to the function will not contain the object, but its previous value (or null). Assignment with = works fine.

Reproduce code:
---------------
<pre><?php

class A {}

function Foo(&$param)
{
	$param =& new A();
}

function Bar(&$param)
{
	$param = new A();
}

echo phpversion()."\n";

$p = 1;
Foo($p);
var_dump($p);

$q = 1;
Bar($q);
var_dump($q);

?>


Expected result:
----------------
4.4.6
object(a)(0) {
}
object(a)(0) {
}

Actual result:
--------------
4.4.6
int(1)
object(a)(0) {
}