Merge branch 'af_unix-fix-msg_oob-bugs-with-msg_peek'

Kuniyuki Iwashima says:

====================
af_unix: Fix MSG_OOB bugs with MSG_PEEK.

Currently, OOB data can be read without MSG_OOB accidentally
in two cases, and this seris fixes the bugs.

v1: https://lore.kernel.org/netdev/20240409225209.58102-1-kuniyu@amazon.com/
====================

Link: https://lore.kernel.org/r/20240410171016.7621-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>