fix, PEBKAC, define a version of struct rotz_s for rotz-fsck

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
Merge branch 'cmd/fsck' into next

* cmd/fsck:
  fix, PEBKAC, define a version of struct rotz_s for rotz-fsck
Merge branch 'next'

* next:
  fix, PEBKAC, define a version of struct rotz_s for rotz-fsck