Specific SVG input file causing panic

[galister]

Unexpected SVG input can cause the program to panic due to this assert:

resvg/crates/resvg/src/filter/lighting.rs

Line 140 in b8e58f5

assert!(src.width == dest.width && src.height == dest.height);

I believe this is a bug as a library should not panic depending on user-dependent input data.

Steps to reproduce:

• Install https://flathub.org/en/apps/io.github.davidoc26.wallpaper_selector
• Feed its icon into resvg

Code to reproduce panic (just cargo add resvg + cargo run)

fn main() {
    let width = 96;
    let height = 96;
    let file_path = "/var/lib/flatpak/exports/share/icons/hicolor/scalable/apps/io.github.davidoc26.wallpaper_selector.svg";

    let options = resvg::usvg::Options {
        style_sheet: Some("svg { color: white }".into()),
        ..Default::default()
    };

    let data = std::fs::read(file_path).unwrap();

    let tree = resvg::usvg::Tree::from_data(data.as_slice(), &options).unwrap();
    let svg_size = tree.size();
    let scale_x = (width as f32) / svg_size.width();
    let scale_y = (height as f32) / svg_size.height();

    let mut pixmap = resvg::tiny_skia::Pixmap::new(width as _, height as _).unwrap();
    let transform = resvg::usvg::Transform::from_scale(scale_x, scale_y);
    resvg::render(&tree, transform, &mut pixmap.as_mut());
}

[galister]

here's the svg file separately, though I'm not sure if github alters it in any way