adjustNamespaces: Prevent infinite children loop

[solcloud]

Hi David, I came across rss (bad.rss.txt) that cause this piece of code to infinitely loop.

I am not rss nor xml expert so I do not know root cause but this patch fix it for me but I do not know if it is good solution?

[solcloud]

POC:

<?php

require_once __DIR__ . '/src/Feed.php';

$feed = Feed::loadRss('https://github.com/dg/rss-php/files/9019437/bad.rss.txt');
// infinite loop
var_dump($feed->title);

[solcloud]

Friendly monthly ping @dg

[solcloud]

Monthly ping @dg

[Josepzin]

Hourly ping @dg :P

[dg]

Thanks, fixed