winedos: Remove superfluous casts of void pointers to other pointer types.

[wine] / dlls / d3d9 / d3d9.spec

@ stdcall D3D9GetSWInfo()
@ stdcall DebugSetMute()
@ stdcall Direct3DCreate9(long)
@ stdcall D3DPERF_BeginEvent(long wstr)
@ stdcall D3DPERF_EndEvent()
@ stdcall D3DPERF_GetStatus()
@ stdcall D3DPERF_SetOptions(long)
@ stdcall D3DPERF_QueryRepeatFrame()
@ stdcall D3DPERF_SetMarker(long wstr)
@ stdcall D3DPERF_SetRegion(long wstr)