[gssdp] net: Skip all interfaces with non-ip AF

[Jens Georg <jensgeorg src gnome org>]

commit 67f67c2236e7cc40b87c869d023f9db32c0caf60
Author: Jens Georg <mail jensge org>
Date:   Tue Oct 30 12:55:15 2018 +0100

    net: Skip all interfaces with non-ip AF
    
    We handle AF_INET / AF_INET6 only anyway.

 libgssdp/gssdp-net-posix.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/libgssdp/gssdp-net-posix.c b/libgssdp/gssdp-net-posix.c
index dd5859e..f57b65c 100644
--- a/libgssdp/gssdp-net-posix.c
+++ b/libgssdp/gssdp-net-posix.c
@@ -131,6 +131,7 @@ gssdp_net_get_host_ip (GSSDPNetworkDevice *device)
 {
         struct ifaddrs *ifa_list, *ifa;
         GList *up_ifaces, *ifaceptr;
+        sa_family_t family = AF_UNSPEC;
 
         up_ifaces = NULL;
 
@@ -145,6 +146,11 @@ gssdp_net_get_host_ip (GSSDPNetworkDevice *device)
                 if (ifa->ifa_addr == NULL)
                         continue;
 
+                family = ifa->ifa_addr->sa_family;
+                if (family != AF_INET && family != AF_INET6) {
+                    continue;
+                }
+
                 if (device->iface_name &&
                     !g_str_equal (device->iface_name, ifa->ifa_name))
                         continue;