message: Fix scaling bug for canvases
diff: @@ -154,7 +154,7 @@ impl Drawable for Canvas {
  };
  let new_dest = mint::Point2 {
  x: dest.x,
  - y: dest.y + f32::from(self.image.height()) * new_scale.y,
  + y: dest.y + f32::from(self.image.height()) * scale.y,
  };
  let new_param = param.dest(new_dest).scale(new_scale);
  self.image.draw(ctx, new_param)
  