dsound: fix remaining ds3d, dsound, dsound8 test failures shown on test.winehq.org

[Paul Vriens]

Jeff Zaroyko wrote:
> This should clear up the remaining dsound test failures shown for the
> Win98 and WinME test results.
> 
> 
> ------------------------------------------------------------------------
> 
> 
Hi Jeff,

Would be a nice-to-have if you could add the platforms as comments to the 
different return values.

-- 
Cheers,

Paul.