builder: Fix error with va_start use
builder: Fix error with va_start use

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