trivial: Do not emit a warning if a child has no version number
trivial: Do not emit a warning if a child has no version number

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