Fix one-off in dcheck. #1393
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Fix one-off in dcheck. #1393
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How to prove correctness: 1) when `position` is `0`, `max_length` is allowed to be `ringbuffer_size` 2) in other words: `position + max_length <= ringbuffer_size` 3) `ringbuffer_mask == ringbuffer_size - 1` 4) thus `position + max_length <= ringbuffer_size + 1` PiperOrigin-RevId: 836145553
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Fix one-off in dcheck.
How to prove correctness:
positionis0,max_lengthis allowed to beringbuffer_sizeposition + max_length <= ringbuffer_sizeringbuffer_mask == ringbuffer_size - 1position + max_length <= ringbuffer_size + 1