From 59ac27f38508bf0cbb0b4d9c700d36447a806564 Mon Sep 17 00:00:00 2001
From: Koen Bussemaker <koen_bussemaker@hotmail.com>
Date: Thu, 9 May 2024 09:49:18 +0200
Subject: [PATCH] Fix #12643: _is_water_region_valid is not cleared/reset in
 AllocateWaterRegions

---
 src/pathfinder/water_regions.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pathfinder/water_regions.cpp b/src/pathfinder/water_regions.cpp
index d9daf3449f..0310f2c42a 100644
--- a/src/pathfinder/water_regions.cpp
+++ b/src/pathfinder/water_regions.cpp
@@ -405,6 +405,7 @@ void AllocateWaterRegions()
 	_water_regions.clear();
 	_water_regions.reserve(number_of_regions);
 
+	_is_water_region_valid.clear();
 	_is_water_region_valid.resize(number_of_regions, false);
 
 	Debug(map, 2, "Allocating {} x {} water regions", GetWaterRegionMapSizeX(), GetWaterRegionMapSizeY());