restart: Request to hide the restart message if not accepted (!1780) · Merge requests · GNOME / mutter

In case the shell ignores or can't accept the restart request we should hide the message that has been just requested to be shown.

As per ::show-restart-message signal documentation, this has to be done by emitting the signal with a NULL message.

So follow the API properly in such case

This was part of !682 (closed) and will help with gnome-shell!1759.

restart: Request to hide the restart message if not accepted