sshd: ClientAlive{CountMax, Interval} fires twice each interval if connection is interrupted

[Samuel Sapalski]

I’ve created meanwhile a bugzilla report for this issue: https://bugzilla.mindrot.org/show_bug.cgi?id=2917 <https://bugzilla.mindrot.org/show_bug.cgi?id=2917>

Thanks for looking at it,
Samuel