Update rect.rs

crates/emath/src/rect.rs

@@ -19,7 +19,7 @@ use crate::{lerp, pos2, vec2, Div, Mul, Pos2, Rangef, Rot2, Vec2};
 /// [`Rect::ZERO`] may seem reasonable, but when used as a bounding box, [`Rect::NOTHING`]
 /// is a better default - so be explicit instead!
 #[repr(C)]
-#[derive(Clone, Copy, Eq, PartialEq)]
+#[derive(Clone, Copy, Default, Eq, PartialEq)]
 #[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
 #[cfg_attr(feature = "bytemuck", derive(bytemuck::Pod, bytemuck::Zeroable))]
 pub struct Rect {