Description:
------------
the second call to scandir() crashes the script with a "Segmentation fault".



Reproduce code:
---------------
<?php
    $dir1 = 'ftp://anonymous:anonymous@mirrors.kernel.org/suse/';

    $f = scandir($dir1 . 'i386/');
    echo count($f) . "\n";


    $f = scandir($dir1 . 'noarch/');
    echo count($f) . "\n";



Expected result:
----------------
# php php_scandir_segfault.php
5
1



Actual result:
--------------
# php php_scandir_segfault.php
5
Segmentation fault