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

[Andrew Cagney]

New commits:
commit 21119e9a75b9134c0a732bd743de27333dca4081
Author: Andrew Cagney <cagney at gnu.org>
Date:   Fri May 29 12:43:24 2020 -0400

    ip: don't use IPPROTO_NONE for zero; it isn't zero