bug#33294: xwidget-insert crashes Emacs

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: lg.zevlg@gmail.com,  gazally@runbox.com,  33294@debbugs.gnu.org,  
> monnier@iro.umontreal.ca
> Date: Mon, 26 Nov 2018 15:02:21 +0100
> 
> >> I don't have access to an Emacs with xwidget support to test this; can
> >> someone please provide a patch for that?
> 
> Something like this? (with ChangeLog etc of course). I couldn't come
> up with a test-case for the xwidget_init_view path, but it causes
> make-xwidget to error out under '-nw'

Yes, that's what I had in mind.  If this works, please push to the
release branch.

Thanks.