[sudo-users] Build error on Solaris 9

[Todd C. Miller]

On Mon, 21 Jun 2021 17:43:38 +0200, Dagobert Michelsen wrote:

> This is a known issue - Solaris 9 does not have INADDR_NONE in
>   /usr/include/netinet/in.h
> I suggest to use a hardcoded substitute with something like
>   #define       INADDR_NONE             0xffffffffU
> on systems where the definition is not available.

Fixed in https://www.sudo.ws/repos/sudo/rev/9da2276cf944

 - todd