From b00e510140b4983d58f580fdca87368b1edb436a Mon Sep 17 00:00:00 2001
From: smatz <smatz@openttd.org>
Date: Sat, 3 Jan 2009 16:06:58 +0000
Subject: (svn r14807) -Codechange: use INVALID_TILE instead of 0 to mark
 invalid depots, industries, towns and waypoints

---
 src/town_gui.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/town_gui.cpp')

diff --git a/src/town_gui.cpp b/src/town_gui.cpp
index 4803e3bf2..c76556170 100644
--- a/src/town_gui.cpp
+++ b/src/town_gui.cpp
@@ -554,7 +554,7 @@ public:
 			while (i < this->towns.Length()) {
 				const Town *t = this->towns[i];
 
-				assert(t->xy);
+				assert(t->xy != INVALID_TILE);
 
 				SetDParam(0, t->index);
 				SetDParam(1, t->population);
@@ -601,7 +601,7 @@ public:
 				if (id_v >= this->towns.Length()) return; // click out of town bounds
 
 				const Town *t = this->towns[id_v];
-				assert(t->xy);
+				assert(t->xy != INVALID_TILE);
 				if (_ctrl_pressed) {
 					ShowExtraViewPortWindow(t->xy);
 				} else {
-- 
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