[C#] Fix warnings.

Author: mjpt777

csharp/sbe-tests/BigEndianTests.cs

@@ -26,12 +26,11 @@ public unsafe class BigendianTests
  {
  // The byte array is from the java example made by running 
  // with -Dsbe.encoding.filename and then decoded using od -tu1
- private byte[] _decodeBuffer = { 0, 49, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 4, 210, 7, 221, 1, 65, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 97, 98, 99, 100, 101, 102, 6, 7, 208, 4, 49, 50, 51, 35, 1, 78, 200, 0, 6, 0, 3, 0, 30, 66, 15, 153, 154, 0, 0, 0, 11, 85, 114, 98, 97, 110, 32, 67, 121, 99, 108, 101, 0, 55, 66, 68, 0, 0, 0, 0, 0, 14, 67, 111, 109, 98, 105, 110, 101, 100, 32, 67, 121, 99, 108, 101, 0, 75, 66, 32, 0, 0, 0, 0, 0, 13, 72, 105, 103, 104, 119, 97, 121, 32, 67, 121, 99, 108, 101, 0, 1, 0, 2, 95, 0, 6, 0, 3, 0, 30, 64, 128, 0, 0, 0, 60, 64, 240, 0, 0, 0, 100, 65, 67, 51, 51, 99, 0, 6, 0, 3, 0, 30, 64, 115, 51, 51, 0, 60, 64, 227, 51, 51, 0, 100, 65, 60, 204, 205, 0, 0, 0, 5, 72, 111, 110, 100, 97, 0, 0, 0, 9, 67, 105, 118, 105, 99, 32, 86, 84, 105, 0, 0, 0, 6, 97, 98, 99, 100, 101, 102 };
+ private readonly byte[] _decodeBuffer = { 0, 49, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 4, 210, 7, 221, 1, 65, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 97, 98, 99, 100, 101, 102, 6, 7, 208, 4, 49, 50, 51, 35, 1, 78, 200, 0, 6, 0, 3, 0, 30, 66, 15, 153, 154, 0, 0, 0, 11, 85, 114, 98, 97, 110, 32, 67, 121, 99, 108, 101, 0, 55, 66, 68, 0, 0, 0, 0, 0, 14, 67, 111, 109, 98, 105, 110, 101, 100, 32, 67, 121, 99, 108, 101, 0, 75, 66, 32, 0, 0, 0, 0, 0, 13, 72, 105, 103, 104, 119, 97, 121, 32, 67, 121, 99, 108, 101, 0, 1, 0, 2, 95, 0, 6, 0, 3, 0, 30, 64, 128, 0, 0, 0, 60, 64, 240, 0, 0, 0, 100, 65, 67, 51, 51, 99, 0, 6, 0, 3, 0, 30, 64, 115, 51, 51, 0, 60, 64, 227, 51, 51, 0, 100, 65, 60, 204, 205, 0, 0, 0, 5, 72, 111, 110, 100, 97, 0, 0, 0, 9, 67, 105, 118, 105, 99, 32, 86, 84, 105, 0, 0, 0, 6, 97, 98, 99, 100, 101, 102 };
  private byte[] _encodeBuffer;
 
  private DirectBuffer _directBuffer;
  private MessageHeader _messageHeader;
- private Car Car;
 
  [TestInitialize]
  public void SetUp()