Creating a RenderContext and Pixmap with differing dimensions can result in a crash #1191
Description
let mut ctx = RenderContext::new(700, 600);
let mut pixmap = Pixmap::new(700, 700);
let rect = Rect::new(0.0, 0.0, 700.0, 700.0);
ctx.push_layer(Some(&rect.to_path(0.1)), None, None, None);
ctx.pop_layer();
ctx.flush();
ctx.render_to_pixmap(&mut pixmap);
Maybe we can somehow enforce them to have the same dimension?