https://gitlab.synchro.net/main/sbbs/-/commit/8a9d76c0fd6f64852d8425e1
Modified Files:
	exec/load/dns.js
Log Message:
Don't return 0 when unable to parse integers.

0 is a valid value, results are undefined.

Validate the size of the message at each step and throw an error if
something goes wrong.

Should fix the issue where an IRC spammers DNS was detected as local,
so the anti-spammer bot banned my server address intead of the
spammers address.
--- SBBSecho 3.23-Linux