iTunes charts bug causing a HTTP error
Created by: scde
Fixes iTunes charts bug caused by using language instead of country code.
Charts is using the language code (en_US) instead of a country code (en_US). This is causing a HTTP error because iTunes uses country codes:
ItunesCharts::__update_for_url(): https://itunes.apple.com/en/rss/topalbums/limit=40/xml => 280
HTTP Error 400: Bad Request