I changed this  SpiAdapter.cs line 84:  ```csharp  Span<byte> readBuffer = stackalloc byte[buffer.Length + 2];  ```    To this  Mcp23s17.Mcp23S17SpiAdapter.cs line 42:  ```csharp  Span<byte> readBuffer = stackalloc byte[      writeBuffer.Length > buffer.Length          ? writeBuffer.Length          : buffer.Length  ];  ```