From 07a1d4379e3694e2302c32eaf044d282e14cfd4f Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Thu, 12 Jul 2007 09:15:57 +0000
Subject: [PATCH] (svn r10520) -Fix: when a "can I build this industry tile
 here" callback did not fail, it doesn't automatically mean that the industry
 tile can be built there.

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

diff --git a/src/newgrf_industrytiles.cpp b/src/newgrf_industrytiles.cpp
index bfa1dbb88f..6983abd4ec 100644
--- a/src/newgrf_industrytiles.cpp
+++ b/src/newgrf_industrytiles.cpp
@@ -244,7 +244,7 @@ bool PerformIndustryTileSlopeCheck(TileIndex tile, const IndustryTileSpec *its,
 	if (its->grf_prop.grffile->grf_version < 7) {
 		return callback_res != 0;
 	}
-	if (callback_res != CALLBACK_FAILED) return true;
+	if (callback_res == CALLBACK_FAILED) return false;
 
 	switch (callback_res) {
 		case 0x400: return true;