ospfd: Fix possible null deref

It is possible that area is null, let's ensure it isn't.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

diff --git a/ospfd/ospf_snmp.c b/ospfd/ospf_snmp.c
index 550e5ee9ee20d07f04c8b284ff56ca5e8ebb6435..63191d5cb58ac7619f25b7bb4bb8ca6821815dda 100644 (file)
--- a/ospfd/ospf_snmp.c
+++ b/ospfd/ospf_snmp.c
@@ -784,7 +784,7 @@ static struct ospf_area *ospfStubAreaLookup(struct variable *v, oid name[],
 
                area = ospf_area_lookup_by_area_id(ospf, *addr);
 
-               if (area->external_routing == OSPF_AREA_STUB)
+               if (area && area->external_routing == OSPF_AREA_STUB)
                        return area;
                else
                        return NULL;