[try 2][2/2]wined3d: Support first clipplane with ARB shaders

[Henri Verbeet]

2008/8/24 Fabian Bieler <der.fabe at gmx.net>:
> +    if (use_vs(stateblock->wineD3DDevice) && (enable ^ supported_by_shader_backend) & enable) {
Did you mean to write
    if (use_vs(stateblock->wineD3DDevice) && (enable &
~supported_by_shader_backend)) {
there?