From 87bddae480fc855d8e5332f8ce43e8ec919963bf Mon Sep 17 00:00:00 2001
From: Octav Sandulescu <github@narc.ro>
Date: Sat, 24 Nov 2012 09:44:21 +0200
Subject: [PATCH] Guard against an NPE in the refinery GUI.

---
 common/buildcraft/factory/gui/GuiRefinery.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/buildcraft/factory/gui/GuiRefinery.java b/common/buildcraft/factory/gui/GuiRefinery.java
index 67ddfd76..582ecf6b 100644
--- a/common/buildcraft/factory/gui/GuiRefinery.java
+++ b/common/buildcraft/factory/gui/GuiRefinery.java
@@ -82,6 +82,10 @@ public class GuiRefinery extends GuiAdvancedInterface {
 		if (slot != null) {
 			LiquidStack liquid = LiquidContainerRegistry.getLiquidForFilledItem(mc.thePlayer.inventory.getItemStack());
 
+			if(liquid == null) {
+				return;
+			}
+
 			container.setFilter(position, liquid.itemID, liquid.itemMeta);
 		}
 	}