OutOfRange error in Hash Benchmark demo

[MHumm]

Describe the bug
The HashBenchmark demo application stops with an OutOfRange error in the Keccack224 hash calculation, at least on Win32.
The problem is, that it sometimes does not happen when stepping through the code.
It crashes in the Absorb method of the hash algorithm.

To Reproduce
Steps to reproduce the behavior:

1. Open HashBenchmark demo project
2. Press F9
3. Klick the play button
4. See exception in Keccack224 benchmark calculation

[MHumm]

Strange: FastMM4 doesn't spot any memory errors (I hope I set the right params, but I had enabled full debug mode) but not registering all hashes benchmarked before the one which crashes prevents the crash.

[MHumm]

Next strange thing: I reactivated the Haval hashes, but not BCrypt and now it crashes somewhere in Haval, instead of Keccack...

[MHumm]

I basically (ok it is more complex) fixed the demo by replacing this:

HashResult := Hash.CalcBuffer(@FBenchmarkBuffer[0], BufferSize);

with:

HashResult := Hash.CalcBytes(FBenchmarkBuffer)

I just wonder why the first call creates trouble.
BufferSize is at maximum the length of FBenchmarkBuffer, which is a TBytes variable.