[FreeBSD port chinput3] chinput crashes when locale not supported

[Yuri]

Hi,

I tried to use chinput but it crashes right after start.
Simple debugging shows that 'setlocale' returns NULL and it's passed to 'memcmp'.
I think my libc doesn't support locales.

Code should check if 'setlocale' returns NULL and print message accordingly
instead of crashing.

Please either fix or notify an original author.

Thanks,
Yuri