From: Jie Liu <jeff.liu@oracle.com>

Consolidate xfs_inumbers() to make the formatter function return correct
error and make the source code looks a bit neat.
Signed-off-by: NJie Liu <jeff.liu@oracle.com>
Reviewed-by: NDave Chinner <dchinner@redhat.com>
Signed-off-by: NDave Chinner <david@fromorbit.com>