flatpak-builtins-update.c: Fixed loading of arch option
flatpak-builtins-update.c: Fixed loading of arch option

Code was organized in such a way that the --arch option
was being ignored.

https://bugs.freedesktop.org/show_bug.cgi?id=95489

amigadave/flatpak,matthiasclasen/flatpak,amigadave/flatpak,handsome-feng/flatpak,GeorgesStavracas/flatpak,flatpak/flatpak,GeorgesStavracas/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak,flatpak/flatpak,alexlarsson/xdg-app,handsome-feng/flatpak,amigadave/flatpak,GeorgesStavracas/flatpak,alexlarsson/xdg-app,matthiasclasen/flatpak,handsome-feng/flatpak,alexlarsson/xdg-app,handsome-feng/flatpak,flatpak/flatpak,matthiasclasen/flatpak,GeorgesStavracas/flatpak,handsome-feng/flatpak,GeorgesStavracas/flatpak,alexlarsson/xdg-app,amigadave/flatpak