Description:
------------
Having the following directory structure:
./directory
./directory/subdirectory
./directory/subdirectory/file2
./directory/subdirectory/file1

when executing the provided test script, after encountering second file there seems to be some corruption. If there's no call to method_exists, everything works fine. 

Test script:
---------------
<?php

$path = 'directory';

$iterator = new RecursiveIteratorIterator(
    new RecursiveDirectoryIterator($path, RecursiveDirectoryIterator::SKIP_DOTS)
);

foreach($iterator as $it)
{
    if (!method_exists($iterator, 'getSubPathName')) {
        throw new \LogicException('This should never happen');
    }


    echo $iterator->getSubPathName(). PHP_EOL;
    
    
}

Expected result:
----------------
subdirectory/file2
subdirectory/file1


Actual result:
--------------
subdirectory/file2
pf��/file1
PHP Fatal error:  Couldn't execute method RecursiveDirectoryIterator::next in Unknown on line 0
PHP Stack trace:
PHP   1. {main}() path/to/file/iterator.php:0