The next patch uses this.

I originally kept these when adding surface_init() in
5f581975 because the original code had them on
most error paths. However, this actually broke ddraw because it assumed we
don't touch "ppSurface" on errors. Just remove these since they're useless
anyway.

ddraw: Don't depend on IWineD3DDevice_CreateSurface() not touching the surface parameter on failure.

The reason it actually fails is because of ddraw trying to create surface of
type "SURFACE_UNKNOWN". Stefan should have a patch for that.

msi: Fix download of installer packages. Return errors from msi_download_file and copy_package_to_temp.