From 8098274892827e2150a573853fb62e1de0285422 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Wed, 24 Mar 2021 23:49:36 +0000
Subject: [PATCH] Fix tile iterator leak when building river/canal

See: https://github.com/OpenTTD/OpenTTD/pull/8880#issuecomment-806253149
---
 src/water_cmd.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index 3770048ae2..9fb23c47ac 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -479,7 +479,7 @@ CommandCost CmdBuildCanal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32
 
 	CommandCost cost(EXPENSES_CONSTRUCTION);
 
-	TileIterator *iter = HasBit(p2, 2) ? (TileIterator *)new DiagonalTileIterator(tile, p1) : new OrthogonalTileIterator(tile, p1);
+	std::unique_ptr<TileIterator> iter(HasBit(p2, 2) ? (TileIterator *)new DiagonalTileIterator(tile, p1) : new OrthogonalTileIterator(tile, p1));
 	for (; *iter != INVALID_TILE; ++(*iter)) {
 		TileIndex tile = *iter;
 		CommandCost ret;