bgpd: bgp_reg_for_label_callback ensure dest exist

More dest may be freed so let's ensure it is not.

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

diff --git a/bgpd/bgp_label.c b/bgpd/bgp_label.c
index 30090e0590b7a5512cb65ee7dccf44c2a1e1d7a1..b8ce1ae467fd0bfd5522f97e840e50e0c16a59df 100644 (file)
--- a/bgpd/bgp_label.c
+++ b/bgpd/bgp_label.c
@@ -195,7 +195,8 @@ int bgp_reg_for_label_callback(mpls_label_t new_label, void *labelid,
                return -1;
        }
 
-       bgp_dest_unlock_node(dest);
+       dest = bgp_dest_unlock_node(dest);
+       assert(dest);
 
        if (BGP_DEBUG(labelpool, LABELPOOL))
                zlog_debug("%s: FEC %pRN label=%u, allocated=%d", __func__,