msvcp140: implement _To_byte

[Nikolay Sivov]

On 09.07.2017 13:42, Stefan Dösinger wrote:
> 
>> +    if (!src || !dst)
>> +        return 0;
> This is redundant. WideCharToMultiByte checks this for you and returns
> 0. I noticed this after sending the _To_wide patch and will send a patch
> removing the redundant check from _To_wide.
> 
> 

Checking 'dst' is not redundant though.