dns_resource_record_clamp_ttl() may patch the TTL in place when the
record has a single reference. dnssec_fix_rrset_ttl() also updates TTLs
after canonical wire-format data may have been cached.
If a record already has cached wire-format data, that cache still
contains the old TTL and dns_resource_record_to_wire_format() will keep
reusing it.
Add a small helper to clear the cached wire-format state, and use it
whenever the TTL changes. This makes subsequent serialization match the
record fields.
Signed-off-by: dongshengyuan <dongshengyuan@uniontech.com>
(cherry picked from commit ccae5c7a4f)
(cherry picked from commit b82a9f9f53)
(cherry picked from commit 03e94e2650)
1d410b0dc9