[tudou] Use _download_xml

youtube_dl/extractor/tudou.py

@@ -35,8 +35,8 @@ class TudouIE(InfoExtractor):
         info_url = "http://v2.tudou.com/f?id=" + str(video_id)
         if quality:
             info_url += '&hd' + quality
-        webpage = self._download_webpage(info_url, video_id, "Opening the info webpage")
-        final_url = self._html_search_regex('>(.+?)</f>', webpage, 'video url')
+        xml_data = self._download_xml(info_url, video_id, "Opening the info XML page")
+        final_url = xml_data.text
         return final_url
 
     def _real_extract(self, url):