Description:
------------
I have a Phar file with the given stub code. This code is 
accessed by an ajax script several times per minute.

Sometimes (randomly) the method getMetadata() returns null 
instead the stored metadata. I think that it's a kind of 
race condition because if I append a usleep(50) before 
execute the getMetaData() method, works.


Reproduce code:
---------------
<?php
try
{
	$__phar = new Phar(__FILE__);
	$m = $__phar->getMetaData();
	require 'phar://' . __FILE__ . '/' . $m['bootstrap'];
}
catch ( PharException $e )
{
	echo $e->getMessage();
	die('Fatal error while initializing package ' . basename(__FILE__));
}
__HALT_COMPILER();