From 1dc630ff26fc15b4e1165e78bd40084fc7bb3b49 Mon Sep 17 00:00:00 2001
From: fonsinchen <fonsinchen@openttd.org>
Date: Sun, 11 May 2014 12:49:51 +0000
Subject: [PATCH] (svn r26575) -Change [FS#5995]: Add an assert to catch
 underflowing action counts.

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

diff --git a/src/cargopacket.cpp b/src/cargopacket.cpp
index 34f8c4243b..9b96be62eb 100644
--- a/src/cargopacket.cpp
+++ b/src/cargopacket.cpp
@@ -359,6 +359,7 @@ void VehicleCargoList::AddToCache(const CargoPacket *cp)
  */
 void VehicleCargoList::RemoveFromMeta(const CargoPacket *cp, MoveToAction action, uint count)
 {
+	assert(count <= this->action_counts[action]);
 	this->AssertCountConsistency();
 	this->RemoveFromCache(cp, count);
 	this->action_counts[action] -= count;