Without this check, the app supposedly crashes when we close it. GtkListBox frees itself the same way. Part-of: <https://gitlab.gnome.org/GNOME/gnome-calendar/-/merge_requests/723>
Without this check, the app supposedly crashes when we close it. GtkListBox frees itself the same way. Part-of: <https://gitlab.gnome.org/GNOME/gnome-calendar/-/merge_requests/723>