networkd: don't clear dhcpv6 lease timers if there's no previous lease

If client->lease is NULL, dhcp6_lease_clear_timers will cause a segmentation
fault.

diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index 8fdbbfe3201e62d4da0b4f37fc8884feb4f39798..a83778e9389c24334a2ff896f9e8568186862ae8 100644 (file)
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -708,7 +708,8 @@ static int client_receive_reply(sd_dhcp6_client *client, DHCP6Message *reply,
                         return 0;
         }
 
-        dhcp6_lease_clear_timers(&client->lease->ia);
+        if (client->lease)
+            dhcp6_lease_clear_timers(&client->lease->ia);
 
         client->lease = sd_dhcp6_lease_unref(client->lease);
         client->lease = lease;