[libc-commits] [libc] [libc][stdlib] Add the FreelistHeap (PR #95066)

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PiJoules wrote:

> Some minor style issues, but otherwise LGTM

Done. Would you mind giving the green approval checkmark? Or should I wait for at least one other person to take a look also.

https://github.com/llvm/llvm-project/pull/95066