Norman Maurer de15b18087 Cleanup PoolChunk / PoolSubpage and add a few more asserts (#10690)
Motivation:

As the PooledByteBufAllocator is a critical part of netty we should ensure it works as expected.

Modifications:

- Add a few more asserts to ensure we not see any corrupted state
- Null out slot in the subpage array once the subpage was freed and removed from the pool
- Merge methods into constructor as it was only called from the constructor anyway.

Result:

Code cleanup
2020-10-15 21:02:11 +02:00
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