gentoo-overlay/net-libs/libmicrodns/files/libmicrodns-0.0.9-null-addr-fix.patch

From efdf2754f9f8b801048b8fdae2b269f091128193 Mon Sep 17 00:00:00 2001
From: Jean-Baptiste Kempf <jb@videolan.org>
Date: Thu, 1 Mar 2018 02:58:13 +0100
Subject: [PATCH] Fix more of the same crash

---
 src/mdns.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mdns.c b/src/mdns.c
index 132beef..55c5cb4 100644
--- a/src/mdns.c
+++ b/src/mdns.c
@@ -117,7 +117,9 @@ mdns_list_interfaces(multicast_if** pp_intfs, size_t* p_nb_intf, int ai_family)
                 return (MDNS_ERROR);
         }
         for (c = ifs; c != NULL; c = c->ifa_next) {
-                if (c->ifa_addr->sa_family != ai_family || !mdns_is_interface_valuable(c))
+                if (c->ifa_addr == NULL ||
+                    c->ifa_addr->sa_family != ai_family ||
+                    !mdns_is_interface_valuable(c))
                         continue;
                 memcpy(intfs, c->ifa_addr, sizeof(*intfs));
                 intfs++;