[8/8] d3d8: Use D3DPRIMITIVETYPE -> WINED3DPRIMITIVETYPE enum conversion function instead of implicit conversion (clang)

[Frédéric Delanoy]

Please skip this patch; it needs adaptation to avoid rebasing/merge
conflicts due to changes to be done in patch " [7/8] d3d8: Use
D3DRENDERSTATETYPE -> WINED3DRENDERSTATETYPE enum conversion function
instead of implicit conversion (clang)."

I'll resend both patches in a subsequent series.

Frédéric