From f160a20a6bf995617cf8a22466638755f9a07813 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Fri, 24 Sep 2021 23:45:13 +0900
Subject: [PATCH] sd-dhcp6-client: make dhcp6_lease_free() accepts NULL

(cherry picked from commit 5cf67bb4072f149d0404398bfc359b068312ba28)

Conflict:NA
Reference:https://github.com/systemd/systemd/commit/f160a20a6bf995617cf8a22466638755f9a07813
---
 src/libsystemd-network/sd-dhcp6-lease.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/libsystemd-network/sd-dhcp6-lease.c b/src/libsystemd-network/sd-dhcp6-lease.c
index 8378971422..4804f0941a 100644
--- a/src/libsystemd-network/sd-dhcp6-lease.c
+++ b/src/libsystemd-network/sd-dhcp6-lease.c
@@ -366,20 +366,18 @@ int sd_dhcp6_lease_get_fqdn(sd_dhcp6_lease *lease, const char **fqdn) {
 }
 
 static sd_dhcp6_lease *dhcp6_lease_free(sd_dhcp6_lease *lease) {
-        assert(lease);
+        if (!lease)
+                return NULL;
 
         free(lease->serverid);
         dhcp6_lease_free_ia(&lease->ia);
         dhcp6_lease_free_ia(&lease->pd);
-
         free(lease->dns);
         free(lease->fqdn);
-
-        lease->domains = strv_free(lease->domains);
-
+        strv_free(lease->domains);
         free(lease->ntp);
+        strv_free(lease->ntp_fqdn);
 
-        lease->ntp_fqdn = strv_free(lease->ntp_fqdn);
         return mfree(lease);
 }
 
-- 
2.33.0