sd-dhcp6-client: check return value

Checking the return values seems to have been forgotten in
ed6ee21953dac9c78383da00bc4514ece6b75ab5

diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index 6e006624ca111990017352ebd38f62f058fe7cae..1d6e42ec83b47d54c567b71401d541a54fb50821 100644 (file)
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -254,6 +254,8 @@ static int client_send_message(sd_dhcp6_client *client) {
 
                 r = dhcp6_option_append(&opt, &optlen,
                                         DHCP6_OPTION_RAPID_COMMIT, 0, NULL);
+                if (r < 0)
+                        return r;
 
                 r = dhcp6_option_append_ia(&opt, &optlen, &client->ia_na);
                 if (r < 0)