wined3d: Don't crash when opengl is not available.

[Henri Verbeet]

On 2 March 2010 18:06, Roderick Colenbrander <thunderbird2k at gmail.com> wrote:
> I'm not sure about the shader backend part of the patch (I don't know
> that code well), so I'm leaving that to Henri and Stefan.
>
You shouldn't be calling those if there's no GL.

(I also still haven't seen anyone make a *convincing* argument for why
we'd want to have a "somewhat working, but not quite" wined3d if we
don't have OpenGL in the first place.)