[PATCH] modules: Fix warning in rtp-recv

[pmeerw@xxxxxxxxxx (Peter Meerwald)]

From: Peter Meerwald <p.meerwald@xxxxxxxxxxxxxxxxxx>

  modules/rtp/module-rtp-recv.c:462:8: warning: 'r' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Peter Meerwald <p.meerwald at bct-electronic.com>
---
 src/modules/rtp/module-rtp-recv.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/modules/rtp/module-rtp-recv.c b/src/modules/rtp/module-rtp-recv.c
index 412f4c3..bbd79a4 100644
--- a/src/modules/rtp/module-rtp-recv.c
+++ b/src/modules/rtp/module-rtp-recv.c
@@ -451,12 +451,15 @@ static int mcast_socket(const struct sockaddr* sa, socklen_t salen) {
         mr4.imr_multiaddr = ((const struct sockaddr_in*) sa)->sin_addr;
         r = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mr4, sizeof(mr4));
 #ifdef HAVE_IPV6
-    } else {
+    } else if (af == AF_INET6) {
         struct ipv6_mreq mr6;
         memset(&mr6, 0, sizeof(mr6));
         mr6.ipv6mr_multiaddr = ((const struct sockaddr_in6*) sa)->sin6_addr;
         r = setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mr6, sizeof(mr6));
 #endif
+    } else {
+        pa_log("Failed to join mcast group");
+        goto fail;
     }
 
     if (r < 0) {
-- 
1.7.9.5