scudo: Update a comment to match the Linux kernel behavior. NFCI. am: 2f046adba4

Original change: https://android-review.googlesource.com/c/platform/external/scudo/+/1562793

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I35b105ccbbda90d08b3e7d82fe953db0c69fb2cb