trivial: Show the UpdateError if the device is not UPDATABLE
trivial: Show the UpdateError if the device is not UPDATABLE

hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,hughsie/fwupd,fwupd/fwupd,fwupd/fwupd