package/connman: fix CVE-2025-32743

In ConnMan through 1.44, the lookup string in ns_resolv in dnsproxy.c
can be NULL or an empty string when the TC (Truncated) bit is set in
a DNS response. This allows attackers to cause a denial of service
(application crash) or possibly execute arbitrary code, because those
lookup values lead to incorrect length calculations and incorrect
memcpy operations.

Fixes:
https://www.cve.org/CVERecord?id=CVE-2025-32743



Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
[Julien: add link to cve]
Signed-off-by: Julien Olivain <ju.o@free.fr>