[dfb] Add geo restriction message

[ghost]

Checklist

• I'm reporting a site feature request
• I've verified that I'm running youtube-dl version 2019.09.28
• I've searched the bugtracker for similar site feature requests including closed ones

Description

Traceback (most recent call last):
  File "/usr/bin/youtube-dl", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python3.7/site-packages/youtube_dl/__init__.py", line 474, in main
    _real_main(argv)
  File "/usr/lib/python3.7/site-packages/youtube_dl/__init__.py", line 464, in _real_main
    retcode = ydl.download(all_urls)
  File "/usr/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 2018, in download
    url, force_generic_extractor=self.params.get('force_generic_extractor', False))
  File "/usr/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 796, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python3.7/site-packages/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/lib/python3.7/site-packages/youtube_dl/extractor/dfb.py", line 47, in _real_extract
    'm3u8_native', m3u8_id='hls', fatal=False))
  File "/usr/lib/python3.7/site-packages/youtube_dl/extractor/common.py", line 1596, in _extract_m3u8_formats
    fatal=fatal)
  File "/usr/lib/python3.7/site-packages/youtube_dl/extractor/common.py", line 660, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data, headers=headers, query=query, expected_status=expected_status)
  File "/usr/lib/python3.7/site-packages/youtube_dl/extractor/common.py", line 627, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 2236, in urlopen
    req = sanitized_Request(req)
  File "/usr/lib/python3.7/site-packages/youtube_dl/utils.py", line 2145, in sanitized_Request
    return compat_urllib_request.Request(sanitize_url(url), *args, **kwargs)
  File "/usr/lib/python3.7/urllib/request.py", line 328, in __init__
    self.full_url = url
  File "/usr/lib/python3.7/urllib/request.py", line 354, in full_url
    self._parse()
  File "/usr/lib/python3.7/urllib/request.py", line 383, in _parse
    raise ValueError("unknown url type: %r" % self.full_url)
ValueError: unknown url type: 'restricted?hdnea=restricted'