From de21c59c0244eb6b2952a02faa6f8d2dc788ac1e Mon Sep 17 00:00:00 2001
From: yexo <yexo@openttd.org>
Date: Sat, 1 May 2010 18:58:50 +0000
Subject: [PATCH] (svn r19749) -Fix: [NewGRF] possible divide-by-zero if a
 newgrf checked industry var 42 while the production level was 0

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

diff --git a/src/newgrf_industries.cpp b/src/newgrf_industries.cpp
index d9aa81477f..e9cd0e4778 100644
--- a/src/newgrf_industries.cpp
+++ b/src/newgrf_industries.cpp
@@ -204,6 +204,7 @@ uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte par
 			uint16 callback = indspec->callback_mask;
 			if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(callback, CBM_IND_PRODUCTION_256_TICKS)) {
 				if ((indspec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) {
+					if (industry->prod_level == 0) return 0;
 					return min(industry->incoming_cargo_waiting[variable - 0x40] / industry->prod_level, (uint16)0xFFFF);
 				} else {
 					return min(industry->incoming_cargo_waiting[variable - 0x40], (uint16)0xFFFF);