[viewster] use geo verifcation headers

youtube_dl/extractor/viewster.py

@@ -86,7 +86,9 @@ class ViewsterIE(InfoExtractor):
     def _real_extract(self, url):
         video_id = self._match_id(url)
         # Get 'api_token' cookie
-        self._request_webpage(HEADRequest('http://www.viewster.com/'), video_id)
+        self._request_webpage(
+            HEADRequest('http://www.viewster.com/'),
+            video_id, headers=self.geo_verification_headers())
         cookies = self._get_cookies('http://www.viewster.com/')
         self._AUTH_TOKEN = compat_urllib_parse_unquote(cookies['api_token'].value)