From d3bc3493eecdae43c5dd0b4f775cf2c2ece8c11b Mon Sep 17 00:00:00 2001
From: Russell Champoux <Russell.Champoux@coupa.com>
Date: Fri, 5 Dec 2025 11:53:03 -0500
Subject: [PATCH] Fix clippy warning: collapse nested if in Day 4

---
 src/bin/04.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/bin/04.rs b/src/bin/04.rs
index 965d0d4..83f3e31 100644
--- a/src/bin/04.rs
+++ b/src/bin/04.rs
@@ -41,10 +41,10 @@ fn count_neighbors(grid: &[Vec<Cell>], row: usize, col: usize) -> usize {
             }
             let nr = row as i32 + dr;
             let nc = col as i32 + dc;
-            if nr >= 0 && nr < rows && nc >= 0 && nc < cols {
-                if grid[nr as usize][nc as usize].is_paper() {
-                    count += 1;
-                }
+            if nr >= 0 && nr < rows && nc >= 0 && nc < cols
+                && grid[nr as usize][nc as usize].is_paper()
+            {
+                count += 1;
             }
         }
     }