[Swan-commit] Changes to ref refs/heads/main

[D. Hugh Redelmeier]

New commits:
commit f2c2917fdfc70ba04f02f30cb8c909fa734607ea
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Wed Jul 26 01:54:46 2023 -0400

    pluto packet.c: conform to memcpy rules
    
    The C standare (suprisingly) requires memcpy pointer args
    to be to valid addresses, even if the length is zero.
    It appears (to lclint) that we violated this.
    Now memcpy is only called if the length is not zero.