From 96bfcd587b62785ab4901c11f5c5aa0736e2b752 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Thu, 17 Jun 2021 17:00:33 +0100
Subject: [PATCH] Fix signedness mismatch warning in tunnel length check

---
 src/road.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/road.cpp b/src/road.cpp
index c2315f03e1..51b5c0309a 100644
--- a/src/road.cpp
+++ b/src/road.cpp
@@ -384,7 +384,7 @@ static TileIndex BuildTunnel(PathNode *current, TileIndex end_tile = INVALID_TIL
 		int end_z;
 		const uint tunnel_length_limit = std::min<uint>(_settings_game.construction.max_tunnel_length, 30);
 
-		for (int tunnel_length = 1;;tunnel_length++) {
+		for (uint tunnel_length = 1;; tunnel_length++) {
 			end_tile += delta;
 
 			if (!IsValidTile(end_tile)) return INVALID_TILE;