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

[Andrew Cagney]

New commits:
commit 7445edef7478495e62d1ced4bb1271938c87ae8c
Author: Andrew Cagney <cagney at gnu.org>
Date:   Fri Oct 2 10:46:25 2020 -0400

    helpers: use an int (helper id) as the shutdown message (coverity)
    
    not a pointer; and better check read()'s return value