Clean Day 7 part 2

src/main.rs

@@ -94,14 +94,14 @@ fn solution(input: impl Iterator<Item = &'static str>) -> u32 {
                     .take_while(|&c| c != b' ')
                     .fold(0u32, |a, x| a * 10 + (x - b'0') as u32);
 
-                if let Node::Directory(v) = current {
+                let Node::Directory(v) = current else {unreachable!("not a directory") };
+
                 v.children
                     .entry(name.to_string())
                     .or_insert(Node::File(fsize));
             }
         }
     }
-    }
 
     compute_dir_size(&mut tree);