Implementation transition: Use distreference.IsNameOnly in XIsNameOnly
Implementation transition: Use distreference.IsNameOnly in XIsNameOnly

The two functions are line-by-line identical now.

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

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