Secure filename copy to fixed size variable wfileName

[Dmitry Timoshkov]

"Tomasz Jezierski - Tefnet" <developers at tefnet.pl> wrote:

> -     strcpyW(wfileName, sei_tmp.lpFile);
> +           StrCpyNW(wfileName, sei_tmp.lpFile,sizeof(wfileName));
>   }
>      } else
> - strcpyW(wfileName, sei_tmp.lpFile);
> +       StrCpyNW(wfileName, sei_tmp.lpFile,sizeof(wfileName));

Your patch doesn't make the code more secure than it is now. StrCpyNW takes
number of characters, not bytes. And since it's just a wrapper around lstrcpynW
it's better to use the latter one instead.

-- 
Dmitry.