lib, zebra: extend use of sockunion2ip macro

  * lib/sockunion.c,
  * zebra/zebra_rib.c: replace ->sin.sin_addr.s_addr with sockunion2ip

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
[reworded commit message]
Signed-off-by: David Lamparter <equinox@diac24.net>
diff --git a/lib/sockunion.c b/lib/sockunion.c
index 4c2837b..37dc3f9 100644
--- a/lib/sockunion.c
+++ b/lib/sockunion.c
@@ -370,7 +370,7 @@
       su->sin.sin_len = size;
 #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
       if (su_addr == NULL)
-	su->sin.sin_addr.s_addr = htonl (INADDR_ANY);
+	sockunion2ip (su) = htonl (INADDR_ANY);
     }
 #ifdef HAVE_IPV6
   else if (su->sa.sa_family == AF_INET6)
@@ -727,9 +727,9 @@
 
   if (su1->sa.sa_family == AF_INET)
     {
-      if (ntohl (su1->sin.sin_addr.s_addr) == ntohl (su2->sin.sin_addr.s_addr))
+      if (ntohl (sockunion2ip (su1)) == ntohl (sockunion2ip (su2)))
 	return 0;
-      if (ntohl (su1->sin.sin_addr.s_addr) > ntohl (su2->sin.sin_addr.s_addr))
+      if (ntohl (sockunion2ip (su1)) > ntohl (sockunion2ip (su2)))
 	return 1;
       else
 	return -1;
diff --git a/zebra/zebra_rib.c b/zebra/zebra_rib.c
index 154e8d5..50674ee 100644
--- a/zebra/zebra_rib.c
+++ b/zebra/zebra_rib.c
@@ -678,8 +678,8 @@
     if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
     {
       /* We are happy with either direct or recursive hexthop */
-      if (nexthop->gate.ipv4.s_addr == qgate->sin.sin_addr.s_addr ||
-          nexthop->rgate.ipv4.s_addr == qgate->sin.sin_addr.s_addr)
+      if (nexthop->gate.ipv4.s_addr == sockunion2ip (qgate) ||
+          nexthop->rgate.ipv4.s_addr == sockunion2ip (qgate))
         return ZEBRA_RIB_FOUND_EXACT;
       else
       {
@@ -688,7 +688,7 @@
           char gate_buf[INET_ADDRSTRLEN], rgate_buf[INET_ADDRSTRLEN], qgate_buf[INET_ADDRSTRLEN];
           inet_ntop (AF_INET, &nexthop->gate.ipv4.s_addr, gate_buf, INET_ADDRSTRLEN);
           inet_ntop (AF_INET, &nexthop->rgate.ipv4.s_addr, rgate_buf, INET_ADDRSTRLEN);
-          inet_ntop (AF_INET, &qgate->sin.sin_addr.s_addr, qgate_buf, INET_ADDRSTRLEN);
+          inet_ntop (AF_INET, &sockunion2ip (qgate), qgate_buf, INET_ADDRSTRLEN);
           zlog_debug ("%s: qgate == %s, gate == %s, rgate == %s", __func__, qgate_buf, gate_buf, rgate_buf);
         }
         return ZEBRA_RIB_FOUND_NOGATE;