Re: Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable

[Eli Zaretskii]

Ping!

> Date: Sat, 16 Jul 2016 20:16:35 +0300
> From: Eli Zaretskii <address@hidden>
> 
>     CC       libguile_2.0_la-socket.lo
>   socket.c: In function 'scm_fill_sockaddr':
>   socket.c:747:16: warning: variable 'scope_id' set but not used 
> [-Wunused-but-set-variable]
>     unsigned long scope_id = 0;
>                 ^
> 
> The patch to avoid this warning is below.  OK to commit?
> 
> --- libguile/socket.c~0       2016-01-02 16:24:55.000000000 +0200
> +++ libguile/socket.c 2016-07-15 19:17:40.023250000 +0300
> @@ -744,7 +744,9 @@ scm_fill_sockaddr (int fam, SCM address,
>       int port;
>       struct sockaddr_in6 *soka;
>       unsigned long flowinfo = 0;
> +#ifdef HAVE_SIN6_SCOPE_ID
>       unsigned long scope_id = 0;
> +#endif
>  
>       SCM_VALIDATE_CONS (which_arg + 1, *args);
>       port = scm_to_int (SCM_CAR (*args));
> @@ -755,8 +757,10 @@ scm_fill_sockaddr (int fam, SCM address,
>           *args = SCM_CDR (*args);
>           if (scm_is_pair (*args))
>             {
> +#ifdef HAVE_SIN6_SCOPE_ID
>               SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args),
>                                        scope_id);
> +#endif
>               *args = SCM_CDR (*args);
>             }
>         }
> 
>