Anders Kaseorg bf45f921a7 url_preview: Allow Beautiful Soup to get the charset from <meta>. ...

An HTML document sent without a charset in the Content-Type header
needs to be scanned for a charset in <meta> tags.  We need to pass
bytes instead of str to Beautiful Soup to allow it to do this.

Fixes #16843.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

2020-12-15 11:30:57 -08:00

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