jsoninfo: fix a crash when there are no gateways

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

diff --git a/lib/jsoninfo/src/olsrd_jsoninfo.c b/lib/jsoninfo/src/olsrd_jsoninfo.c
index 5f6e437..7bb9d86 100644 (file)
--- a/lib/jsoninfo/src/olsrd_jsoninfo.c
+++ b/lib/jsoninfo/src/olsrd_jsoninfo.c
@@ -871,7 +871,7 @@ static void sgw_ipvx(struct autobuf *abuf, bool ipv6) {
       struct ipaddr_str tunnelGwStr;
       const char * tunnelGw;
 
-      struct gateway_entry * gw = node->gw;
+      struct gateway_entry * gw = node ? node->gw : NULL;
       struct tc_entry* tc;
 
       if (!gw) {