DataStream copy does not account for index offset

[tomspilman]

I just noticed what I think is a bug in the DataStream.Create:

https://github.com/sharpdx/SharpDX/blob/master/Source/SharpDX/DataStream.cs#L118

The path that makes a copy of the buffer does not account for the index. It seems like that should be changed to:

else
{
   var indexOffset = index * Utilities.SizeOf<T>();
   stream = new DataStream(Interop.Fixed(userBuffer) + indexOffset, sizeOfBuffer - indexOffset, canRead, canWrite, true);
}

This seem correct or am I missing something?

[xoofx]

Good catch, yes, it is a bug