makemandb: Error in indexing /usr/pkg/man/man3/libarchive_changes.3

[Edgar Fuß]

On a 6.1_STABLE system, I'm getting
        makemandb: Error in indexing /usr/pkg/man/man3/archive_write_filter.3
        makemandb: Error in indexing /usr/pkg/man/man3/libarchive_changes.3
but the files look OK to me.