Fix compilation on some architectures.

src/dns.c

@@ -649,7 +649,7 @@ static size_t dns_af_len(int af) {
 	return table[af];
 } /* dns_af_len() */
 
-#define dns_sa_family(sa)	(((struct sockaddr *)(sa))->sa_family)
+#define dns_sa_family(sa)	(((struct sockaddr_storage *)(sa))->ss_family)
 
 #define dns_sa_len(sa)		dns_af_len(dns_sa_family(sa))
 

src/transports/udp_listeningpoint.c

@@ -145,7 +145,7 @@ static int on_udp_data(belle_sip_udp_listening_point_t *lp, unsigned int events)
 			belle_sip_channel_t *chan;
 			struct addrinfo ai={0};
 			belle_sip_address_remove_v4_mapping((struct sockaddr*)&addr,(struct sockaddr*)&addr,&addrlen);
-			ai.ai_family=((struct sockaddr*)&addr)->sa_family;
+			ai.ai_family=addr.ss_family;
 			ai.ai_addr=(struct sockaddr*)&addr;
 			ai.ai_addrlen=addrlen;
 			chan=_belle_sip_listening_point_get_channel((belle_sip_listening_point_t*)lp,NULL,&ai);