[Libva] [PATCH v2] va.h: fix compile warning

[Xiang, Haihao]

Applied.

Thanks
Haihao

> If we specify compiling option with "-Werror=strict-prototypes", we
> will get the following error:
> va/va.h:294:1: error: function declaration isn't a prototype [-
> Werror=strict-prototypes]
> typedef int (*VAPrivFunc)();
> 
> This patch declares the VAPrivFunc with parameter 'void', to make the
> compiler happy.
> 
> Signed-off-by: Li Zhijian <zhijianx.li at intel.com>
> ---
>  va/va.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/va/va.h b/va/va.h
> index 153a89b..8791906 100644
> --- a/va/va.h
> +++ b/va/va.h
> @@ -291,7 +291,7 @@ const char *vaQueryVendorString (
>      VADisplay dpy
>  );
>  
> -typedef int (*VAPrivFunc)();
> +typedef int (*VAPrivFunc)(void);
>  
>  /**
>   * Return a function pointer given a function name in the library.