From 8e30f0e75abe83358a0d3c72716d7a77d0f89cf1 Mon Sep 17 00:00:00 2001
From: frosch <frosch@openttd.org>
Date: Sat, 23 May 2009 13:42:02 +0000
Subject: [PATCH] (svn r16399) -Fix (r4540): Don't treat pointer values as
 integer.

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

diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 530df31b6d..1733d7536c 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -3311,7 +3311,7 @@ static void FeatureMapSpriteGroup(byte *buf, size_t len)
 	 * W cid           cargo ID (sprite group ID) for this type of cargo
 	 * W def-cid       default cargo ID (sprite group ID) */
 
-	if (_cur_grffile->spritegroups == 0) {
+	if (_cur_grffile->spritegroups == NULL) {
 		grfmsg(1, "FeatureMapSpriteGroup: No sprite groups to work on! Skipping");
 		return;
 	}