# HG changeset patch
# User frosch <frosch@openttd.org>
# Date 1243086122 0
# Node ID 540445a84043e0ac1c9e73e5ad4d1404a6d48323
# Parent  173f04b1b0c6c0836824b20950260b8fc17ab25f
(svn r16399) -Fix (r4540): Don't treat pointer values as integer.

diff --git a/src/newgrf.cpp b/src/newgrf.cpp
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -3311,7 +3311,7 @@
 	 * 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;
 	}