From 29ba3a1dd7a70a8e157c8ed8962c3ea1f2018f1b Mon Sep 17 00:00:00 2001
From: frosch <frosch@openttd.org>
Date: Sat, 13 Aug 2011 10:43:11 +0000
Subject: [PATCH] (svn r22739) -Fix: The measurement tooltip is supposed to be
 hidden when not dragging an area.

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

diff --git a/src/viewport.cpp b/src/viewport.cpp
index dcfe4cf01f..e0996c7865 100644
--- a/src/viewport.cpp
+++ b/src/viewport.cpp
@@ -2786,7 +2786,7 @@ calc_heightdiff_single_direction:;
 					}
 				}
 
-				if (t0 != 1 || t1 != 1) {
+				if (dx != 1 || dy != 1) {
 					int heightdiff = CalcHeightdiff(style, 0, t0, t1);
 
 					params[index++] = dx;