ws2_32: Fix some edge cases for getaddrinfo in BSD and OSX

[Bruno Jesus]

On Fri, Feb 14, 2014 at 9:27 AM, Dmitry Timoshkov <dmitry at baikal.ru> wrote:
> Bruno Jesus <00cpxxx at gmail.com> wrote:
>
>> +    /* servname tweaks required by OSX and BSD kernels */
>> +    if (!servname)
>> +        serv = NULL;
>> +    else if (!servname[0])
>> +        serv = "0";
>> +    else
>> +        serv = servname;
>
> Shouldn't 'serv = "0"' be 'serv = ""' ?

No, that is the trick. Linux supports both "" and "0" but OSX/BSD does
not support "". So turning the "" into "0" solves the issue.

> --
> Dmitry.

Bruno