libcollectdclient: fix usage of ip_mreq

On both IBM AIX and Gentoo Linux, the struct `ip_mreq` does not define
the field `imr_address`, plus the compiler throws an error in the
assignment of `sa->s_addr`. With `ip_mreqn` present, the fallback path
for `ip_mreq` is not used and everything works. But AIX does not know
that struct and fails to compile.

diff --git a/src/libcollectdclient/server.c b/src/libcollectdclient/server.c
index d18cc7d..a81afda 100644 (file)
--- a/src/libcollectdclient/server.c
+++ b/src/libcollectdclient/server.c
@@ -82,7 +82,7 @@ static int server_multicast_join(lcc_listener_t *srv,
     };
 #else
     struct ip_mreq mreq = {
-        .imr_address.s_addr = INADDR_ANY, .imr_multiaddr.s_addr = sa->s_addr,
+        .imr_multiaddr.s_addr = sa->sin_addr.s_addr,
     };
 #endif
     status = setsockopt(srv->conn, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq,