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

[Andrew Cagney]

New commits:
commit 323e463a4717ef31616bc830bbc706ebbc89c4eb
Author: Andrew Cagney <cagney at gnu.org>
Date:   Mon Dec 20 19:03:32 2021 -0500

    host_pair: in FOR_EACH_HOST_PAIR_CONNECTION() don't skip instances with ID_NULL
    
    Instead let calling code skip it.