Merge branch 'fou-gue-fix-skb-memleak-with-inner-protocol-0'

Kuniyuki Iwashima says:

====================
fou/gue: Fix skb memleak with inner protocol 0.

syzbot reported memleak for a GUE packet with its inner
protocol number 0.

Patch 1 fixes the issue, and patch 3 fixes the same issue
in FOU.
====================

Link: https://patch.msgid.link/20260115172533.693652-1-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>