gmenuexporter: Fix warning of unused n_items when building with G_DISABLE_ASSERT
Spotted in https://gitlab.gnome.org/GNOME/glib/-/jobs/2461358
Signed-off-by: Philip Withnall pwithnall@endlessos.org
Spotted in https://gitlab.gnome.org/GNOME/glib/-/jobs/2461358
Signed-off-by: Philip Withnall pwithnall@endlessos.org