nstree: simplify owner list iteration

Make use of list_for_each_entry_from_rcu().

Link: https://patch.msgid.link/20251110-work-namespace-nstree-fixes-v1-6-e8a9264e0fb9@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Christian Brauner 2025-11-10 16:08:18 +01:00
commit 8a30420c89
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