From 66b5c615b7d027e5dfd28efb402b6abc72afb032 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Sat, 19 Aug 2023 15:35:04 +0100
Subject: [PATCH] Use btree map for GRF ID overrides

---
 src/newgrf.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 7a83d93cee..e4860aa7ca 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -59,7 +59,6 @@
 #include "table/build_industry.h"
 
 #include "3rdparty/cpp-btree/btree_map.h"
-#include <map>
 
 #include "safeguards.h"
 
@@ -499,7 +498,7 @@ StringID MapGRFStringID(uint32 grfid, StringID str)
 	}
 }
 
-static std::map<uint32, uint32> _grf_id_overrides;
+static btree::btree_map<uint32, uint32> _grf_id_overrides;
 
 /**
  * Set the override for a NewGRF