From 14d28c5e699b8b8e82526e28e16e1d80cd0e7a28 Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Thu, 25 Feb 2010 14:53:22 +0000
Subject: [PATCH] (svn r19250) -Fix [FS#3643]: with RTL languages clicking a
 horizontal scrollbar that could not scroll could cause a crash

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

diff --git a/src/window.cpp b/src/window.cpp
index dbe971c62d..602759189e 100644
--- a/src/window.cpp
+++ b/src/window.cpp
@@ -1757,7 +1757,7 @@ static bool HandleScrollbarScrolling()
 
 			/* Find the item we want to move to and make sure it's inside bounds. */
 			int pos = min(max(0, i + _scrollbar_start_pos) * sb->GetCount() / _scrollbar_size, max(0, sb->GetCount() - sb->GetCapacity()));
-			if (rtl) pos = sb->GetCount() - sb->GetCapacity() - pos;
+			if (rtl) pos = max(0, sb->GetCount() - sb->GetCapacity() - pos);
 			if (pos != sb->GetPosition()) {
 				sb->SetPosition(pos);
 				w->SetDirty();