Sync issue when host sends multiple signon requests

[per1234]

Moved from arduino/Arduino#8133 by @f34rdotcom

If the host sends a signon but does not get a SYNC response it will send again. This will lead to being out of sync with data in the rx buffer that is not consumed. To avoid this we consume all extra host bytes before sending a INSYNC reply.

[f34rdotcom]

I am not sure how I can set my git repo back to that point so I can fix it :(
The fix is simple just need the {}. help :)

[per1234]

I have now fixed the formatting @f34rdotcom. I appreciate your interest in getting the CI status to ✔️!

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ per1234
❌ f34rdotcom
_{You have signed the CLA already but the status is still pending? Let us recheck it.}