message: Use `expect` in `integration_wgpu` example
  ... together with `first` and `copied`.
diff: @@ -89,7 +89,11 @@ pub fn main() {
  let needed_limits = wgpu::Limits::default();
  (
  - surface.get_supported_formats(&adapter)[0],
  + surface
  + .get_supported_formats(&adapter)
  + .first()
  + .copied()
  + .expect("Get preferred format"),
  adapter
  .request_device(
  &wgpu::DeviceDescriptor {
  