device: check nm_ip6_config_get_address_first_nontentative() argument

Since commit 9ff161b2a1b0 ("device: move have_ip6_address() to
nm_ip6_config_get_address_first_nontentative()") the IP configuration
argument of nm_ip6_config_get_address_first_nontentative() must be
non-NULL. Add checks where needed.

Fixes: 9ff161b2a1b0d4a63f91d326050ae1b8906b7b1b

diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index 712c9d9..dd25c4b 100644 (file)
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -5538,7 +5538,8 @@ linklocal6_start (NMDevice *self)
 
        linklocal6_cleanup (self);
 
-       if (nm_ip6_config_get_address_first_nontentative (priv->ip6_config, TRUE))
+       if (   priv->ip6_config
+           && nm_ip6_config_get_address_first_nontentative (priv->ip6_config, TRUE))
                return NM_ACT_STAGE_RETURN_FINISH;
 
        connection = nm_device_get_applied_connection (self);
@@ -5773,7 +5774,8 @@ rdisc_ra_timeout (NMRDisc *rdisc, NMDevice *self)
                 * IPv6 configuration, like manual IPv6 addresses or external IPv6
                 * config, consider that sufficient for IPv6 success.
                 */
-               if (nm_ip6_config_get_address_first_nontentative (priv->ip6_config, FALSE))
+               if (   priv->ip6_config
+                   && nm_ip6_config_get_address_first_nontentative (priv->ip6_config, FALSE))
                        nm_device_activate_schedule_ip6_config_result (self);
                else
                        nm_device_activate_schedule_ip6_config_timeout (self);