From e9837ff1ec1326aec622366ae29ff1aa81581daf Mon Sep 17 00:00:00 2001
From: yexo <yexo@openttd.org>
Date: Sun, 1 May 2011 21:02:18 +0000
Subject: (svn r22409) -Fix: [NewGRF] make sure the action2 ID of a generic
 feature callback is valid

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

(limited to 'src/newgrf.cpp')

diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 4a14381e4..85d9a7ef8 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -4565,6 +4565,7 @@ static void FeatureMapSpriteGroup(ByteReader *buf)
 		/* Skip number of cargo ids? */
 		buf->ReadByte();
 		uint16 groupid = buf->ReadWord();
+		if (!IsValidGroupID(groupid, "FeatureMapSpriteGroup")) return;
 
 		grfmsg(6, "FeatureMapSpriteGroup: Adding generic feature callback for feature %d", feature);
 
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