[C#] Fix typo with extra bracket.

Author: mjpt777

csharp/sbe-dll/DirectBuffer.cs

@@ -137,14 +137,14 @@ private void TryResizeBuffer(int limit)
  {
  if (bufferOverflow == null)
  {
- throw new IndexOutOfRangeException("limit=" + limit + " is beyond capacity=" + _capacity));
+ throw new IndexOutOfRangeException("limit=" + limit + " is beyond capacity=" + _capacity);
  }
 
  var newBuffer = bufferOverflow(_capacity, limit);
 
  if (newBuffer == null)
  {
- throw new IndexOutOfRangeException("limit=" + limit + " is beyond capacity=" + _capacity));
+ throw new IndexOutOfRangeException("limit=" + limit + " is beyond capacity=" + _capacity);
  }
 
  Marshal.Copy((IntPtr)_pBuffer, newBuffer, 0, _capacity);