[acpica] Avoid undefined behavior

Upstream:
- https://github.com/acpica/acpica/pull/995.

Bug: 42084914
Change-Id: I1ef5d449d2cdbf9f09a3a9fdbded852b8afefdb3
5 files changed
tree: 8aa46d39a6d56bcfd264616bd3007025525c1441
  1. include/
  2. source/
  3. BUILD.gn
  4. changes.txt
  5. LICENSE
  6. OWNERS
  7. README.fuchsia
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