ospfd: fix crash on "ospf send-extra-data zebra"

`ospf->new_table` is NULL if the OSPF instance has no routes.

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>

diff --git a/ospfd/ospf_vty.c b/ospfd/ospf_vty.c
index 3d0804b0188ebf30b930279f1917f5869a269b08..9940ce1c6979e5499e14d0889d140759913dfb3a 100644 (file)
--- a/ospfd/ospf_vty.c
+++ b/ospfd/ospf_vty.c
@@ -2223,6 +2223,9 @@ static void ospf_table_reinstall_routes(struct ospf *ospf,
 {
        struct route_node *rn;
 
+       if (!rt)
+               return;
+
        for (rn = route_top(rt); rn; rn = route_next(rn)) {
                struct ospf_route *or;