style: keep paint.rs spot-colour chain under rustfmt's max width (#3940)

* style: wrap long spot-colour fallback chain to satisfy rustfmt

* fix(brush): replace negated partial-ord comparison (clippy 1.99)

crates/affinity/src/paint.rs

@@ -181,7 +181,10 @@ fn color_within(r: &mut Reader, id: ObjId, depth: u32) -> Option<Color> {
             if depth >= MAX_SPOT_CHAIN {
                 return None;
             }
-            return s.obj(id, b"srgb").and_then(|c| color_within(r, c, depth + 1)).or_else(|| s.obj(id, b"base").and_then(|c| color_within(r, c, depth + 1)));
+            return s
+                .obj(id, b"srgb")
+                .and_then(|c| color_within(r, c, depth + 1))
+                .or_else(|| s.obj(id, b"base").and_then(|c| color_within(r, c, depth + 1)));
         }
         b"RegC" => Color::Cmyk { c: 1.0, m: 1.0, y: 1.0, k: 1.0, a: 1.0 },
         _ => {

crates/brush/src/track.rs

@@ -171,7 +171,9 @@ pub fn tracks(bp: &BezPath, tol: f64) -> Vec<Track> {
     // Far outside any drawing a curve flattens to millions of points; past a few million, the
     // rest are not kept.
     let b = bp.control_box();
-    if !(b.x0.abs().max(b.x1.abs()).max(b.y0.abs()).max(b.y1.abs()) <= 1e9) {
+    let extent = b.x0.abs().max(b.x1.abs()).max(b.y0.abs()).max(b.y1.abs());
+    // NaN coordinates must be rejected too, so keep the negation of the `<=` check.
+    if extent.is_nan() || extent > 1e9 {
         return out;
     }
     let mut els = vec![];