Implementation transition: Use the NamedTagged in XTag instead of namedRef
Implementation transition: Use the NamedTagged in XTag instead of namedRef

Rely on the recently added member instead of the previous
implementation.

Does not change behavior.

Signed-off-by: Miloslav Trmač <9c008e38982a5397deb855345fb164f0558459ae@redhat.com>

containers/image,containers/image,masters-of-cats/image