of the packet to occasionally been misinterpreted as a negative
number.
When discarding a packet for being overly long, restart the state
machine instead of attempting to drop a preposterous amount of data.
It is unlikely in that case that preposterous amount of data would
ever arrive, so rather attempt to re-align the reading algorithm
(supposedly resulting in a timeout and retransmit).
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@472 81a1dc3b-b13d-400b-aceb-764788c761c2