Clippy lint.

rtiow/src/kdtree.rs

@@ -25,10 +25,7 @@ fn vec_first_into<T>(v: Vec<T>) -> T {
             v.len()
         ));
     }
-    for i in v.into_iter() {
-        return i;
-    }
-    panic!("Unreachable");
+    v.into_iter().next().unwrap()
 }
 
 fn vec_split_into<T>(v: Vec<T>, offset: usize) -> (Vec<T>, Vec<T>) {
@@ -167,9 +164,9 @@ impl Hit for KDTree {
                 None => None,
                 Some(_bbox) => match (left.hit(r, t_min, t_max), right.hit(r, t_min, t_max)) {
                     (Some(hit_left), Some(hit_right)) => if hit_left.t < hit_right.t {
-                        return Some(hit_left);
+                        Some(hit_left)
                     } else {
-                        return Some(hit_right);
+                        Some(hit_right)
                     },
                     (Some(hit_left), None) => Some(hit_left),
                     (None, Some(hit_right)) => Some(hit_right),