This gets rid of some potentially scarey messages I've recently
seen on disconnect, "bad hash" for a TD ... it's really a "no hash"
case, and this prevents the message in some cases where that's
not an issue.  Likely this is what Gary Gorgen noticed, but even
he had a different problem, this message shouldn't always appear.

It also slims down one other message, preventing it from appearing
in the routine "protocol stall" case (and cluttering logfiles).