Description:
------------
If you pass a variable as a reference to a function and use that variable in a switch then the variable will not update outside the function.  This worked in 7.0.4 but is not working in 7.0.5.

Test script:
---------------
$var = 'WHAT_IS_THIS';
class BROKEN_VARIABLE_REF
{
    public function __construct() {}
    public function do_it( &$data )
    {
        switch($data) 
        {
            case 'WHAT_IS_THIS':
                $data = "I_WORK";
                break;
            default:
                $retFlag = false;
                break;
        }  
    }
}