Make 'unknown error category' message more informative by including error number. Same change as was made to scsi_base.c a few days ago.
Make 'unknown error category' message more informative by including error
number. Same change as was made to scsi_base.c a few days ago.

ok deraadt@.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars