From a14de92f38c6f35129bec9c9194990125bbbdcef Mon Sep 17 00:00:00 2001
From: peter1138 <peter1138@openttd.org>
Date: Fri, 23 Feb 2007 21:03:57 +0000
Subject: [PATCH] (svn r8865) -Codechange: (NewGRF) Ignore 1 byte action 0s
 during safety check

---
 src/newgrf.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 0d5e2507a1..bffb587495 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -1480,6 +1480,11 @@ static void SafeChangeInfo(byte *buf, int len)
 	uint8 numinfo;
 	uint8 index;
 
+	if (len == 1) {
+		grfmsg(8, "Silently ignoring one-byte special sprite 0x00");
+		return;
+	}
+
 	if (!check_length(len, 6, "SafeChangeInfo")) return;
 	buf++;
 	feature  = grf_load_byte(&buf);