This might even make d3d8 a bit more 64-bit safe.

There should only ever be a single reference to these objects, since only
their handle is exposed outside d3d8. Should there be more references than
that, calling Release() in a while loop probably isn't the right approach.

shader_glsl_gen_sample_code() already takes care of adding the destination.

This gets sound working out of the box on Solaris.