Bug#978107: gajim: Crashes when video preview is turned off in settings dialog window

[Martin]

Control: tags -1 + upstream

In the Gajim MUC, I was pointed to this bug report of 2020-06-29:
https://dev.gajim.org/gajim/gajim/-/issues/10158
Which again points to a MESA bug report one of 2020-05-22:
https://gitlab.freedesktop.org/mesa/mesa/-/issues/3029