6131beead6
There’s no `else` branch above, so it’s possible for `this._notification` to be `null` at the bottom of the function (especially if the user has explicitly closed the previous notification), so handle that. Signed-off-by: Philip Withnall <pwithnall@gnome.org> Helps: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/8280 Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3687>