[PATCH] D90700: [scudo][standalone] Simplify populateFreelist

[Kostya Kortchinsky via Phabricator via llvm-commits]

cryptoad created this revision.
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`populateFreelist` was more complicated that it needed to be. We used
to call to `populateBatches` that would do some internal shuffling and
add pointers one by one to the batches, but ultimately this was not
needed. We can get rid of `populateBatches`, and do processing in
bulk. This doesn't necessarily make things faster as this is not on the
hot path, but it makes the function cleaner.

Additionally clean up a couple of items, like `UNLIKELY`s and setting
`Exhausted` to `false` which can't happen.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D90700

Files:
  compiler-rt/lib/scudo/standalone/primary32.h
  compiler-rt/lib/scudo/standalone/primary64.h

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