RFR: 8275640 (win) java.net.NetworkInterface issues with IPv6-only environments [v4]

[Mark Sheppard]

On Wed, 12 Jan 2022 08:09:59 GMT, Daniel Jelinski <duke at openjdk.java.net> wrote:

>> Clean up of various issues related to error handling and memory management
>
> Daniel Jelinski has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove unused / incorrect exit code -2 from enumInterfaces

src/java.base/windows/native/libnet/NetworkInterface.c line 216:

> 214:                 break;
> 215:         }
> 216:         return -1;

*netifPP = NULL;

and a similar NULL out value for all  return -1  in this function

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PR: https://git.openjdk.java.net/jdk/pull/6090