Thread:Extension talk:WantedPagesFromNS/Taking over an old extension

This extension hasn't been updated in a while and there's several things wrong with it:
 * The archive downloads as a .zip but is actually a .7z, so it needs to be renamed before you can unzip it
 * It doesn't work as-is because modern versions of Mediawiki have deprecated the  function. All that is needed to get this extension working is to comment out that line in the WantedPagesFromNS.php file, but that might be scary for inexperienced users.

Is there a process for essentially taking over maintenance of an extension?