From bd6acb36aed5ef4f65a9d6fea1388cfad9cba3b3 Mon Sep 17 00:00:00 2001
From: smatz <smatz@openttd.org>
Date: Thu, 13 Aug 2009 12:49:51 +0000
Subject: (svn r17164) -Fix: crash when clicking on the spacer in the build
 airport GUI

---
 src/airport_gui.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'src/airport_gui.cpp')

diff --git a/src/airport_gui.cpp b/src/airport_gui.cpp
index 0c9da8732..7bc71ea40 100644
--- a/src/airport_gui.cpp
+++ b/src/airport_gui.cpp
@@ -90,9 +90,9 @@ struct BuildAirToolbarWindow : Window {
 
 	virtual void OnClick(Point pt, int widget)
 	{
-		if (widget - ATW_AIRPORT >= 0) {
-			_build_air_button_proc[widget - ATW_AIRPORT](this);
-		}
+		if (!IsInsideBS(widget, ATW_AIRPORT, lengthof(_build_air_button_proc))) return;
+
+		_build_air_button_proc[widget - ATW_AIRPORT](this);
 	}
 
 
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