link 8 of dens's sigchain signs in a revoked PGP key (#5073)
link 8 of dens's sigchain signs in a revoked PGP key (#5073)

- it was a bug in kbpgp that we weren't catching it, now in review
- just ignore this sigchain link, since it can't do anything useful
keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client