lldpd: fix a segfault when a port disappear

Due to previous recent change, a NULL function could be called when a
port disappear. Fix that.

diff --git a/src/lldpd-structs.c b/src/lldpd-structs.c
index 376da98930b1cea03af5d57b5e5e99e6802379f8..5c907f0df151fd3a288c4136e94cc686c1900ac4 100644 (file)
--- a/src/lldpd-structs.c
+++ b/src/lldpd-structs.c
@@ -130,7 +130,7 @@ lldpd_remote_cleanup(struct lldpd_hardware *hardware,
                        del = 1;
                }
                if (del) {
-                       expire(hardware, port);
+                       if (expire) expire(hardware, port);
                        TAILQ_REMOVE(&hardware->h_rports, port, p_entries);
                        lldpd_port_cleanup(port, 1);
                        free(port);