[PATCH 03/13] signal: use cred_ids_allow_signal()

[sashiko-bot at kernel.org]

> kill_ok_by_cred() and kill_as_cred_perm() have the same four comparisons
> each. Use the library.
> 
> No functional change.
> 
> Assisted-by: LLM
> Signed-off-by: Josef Bacik <josef at toxicpanda.com>

Sashiko has reviewed this patch and found no issues.

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Sashiko AI review · https://sashiko.dev/#/patchset/20261018-b4-cred-ids-v1-0-7bdf2db4ea9f@toxicpanda.com?part=3