[3.13] gh-134875: Fix mimallc build error for the old compilers (gh-134994) (gh-135054)

gh-134875: Fix mimallc build error for the old compilers (gh-134994)
(cherry picked from commit b525e31b7fc50e7a498f8b9b16437cb7b9656f6f)

Co-authored-by: Donghee Na <donghee.na@python.org>