Description:
------------
I'm getting a seg fault when calling mysqli::close() from a derived object in the destructor.

This happens in PHP 5.0.5 (stable), 5.1.0RC1, and all latest snaps, but it does NOT happen in 5.0.4.

Current workaround:

Leave connections open; dunno if this is a major issue or not as connections are supposed to get closed when the script terminates anyway.

Reproduce code:
---------------
<?php
class Data extends mysqli
{
        public function __construct($Host,$User,$Pass,$DB)
        {
                parent::__construct($Host,$User,$Pass,$DB);
        }
        public function __destruct()
        {
                // parent::close(); causes the segfault as well.
                $this->close();
        }
}

$DB = new Data('192.168.50.3','web','f@m!l!es','hermes');

?>


Expected result:
----------------
Not seg faulting.

Actual result:
--------------
Segmentation faults.