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

[Andrew Cagney]

New commits:
commit ad0c69841fc08294d2e8ab69186671055eab4a60
Author: Andrew Cagney <cagney at gnu.org>
Date:   Mon May 10 14:00:44 2021 -0400

    ip: don't touch address list when getaddrinfo() fails
    
    can't assume it is NULL; and use error testsuite expects for now

commit ef75623c1d9d3d12e70c54b2cef1383ad1d4063b
Author: Andrew Cagney <cagney at gnu.org>
Date:   Mon May 10 13:36:05 2021 -0400

    ip: reject ttoaddress_num(0.0.0.0, IPv6)
    
    very old bug