9.16.19 repeated crashes on FreeBSD 12.2-p6

[Randy Bush]

FreeBSD 12.2-RELEASE-p6 GENERIC on amd64
bind 9.16.19 from binary ports

ok, i was quietly waiting for a fix to magically appear and is hasn't.

i am getting 10-20 crashes a day on each of two servers.  it is not
leaving disk flowers; and i see no config option to encourage it to do
so.

randy

---
randy at psg.com
`gpg --locate-external-keys --auto-key-locate wkd randy at psg.com`
signatures are back, thanks to dmarc header butchery