From 0b8e1f62bb38a23e10e09f28ba3bc5ec76f98b8f Mon Sep 17 00:00:00 2001
From: "quartz235@gmail.com"
 <quartz235@gmail.com@316c924e-a436-60f5-8080-3fe189b3f50e>
Date: Sat, 25 Feb 2012 04:02:24 +0000
Subject: [PATCH] (hopefully) fixes a runtime causing the server to shit itself
 and crash immediately

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@3190 316c924e-a436-60f5-8080-3fe189b3f50e
---
 code/modules/recycling/disposal.dm | 71 ++++++++++++++++--------------
 1 file changed, 37 insertions(+), 34 deletions(-)

diff --git a/code/modules/recycling/disposal.dm b/code/modules/recycling/disposal.dm
index 8551fd0420..75ecf18613 100644
--- a/code/modules/recycling/disposal.dm
+++ b/code/modules/recycling/disposal.dm
@@ -372,17 +372,18 @@
 
 		var/turf/target
 		playsound(src, 'hiss.ogg', 50, 0, 0)
-		for(var/atom/movable/AM in H)
-			target = get_offset_target_turf(src.loc, rand(5)-rand(5), rand(5)-rand(5))
+		if(H) // Somehow, someone managed to flush a window which broke mid-transit and caused the disposal to go in an infinite loop trying to expel null, hopefully this fixes it
+			for(var/atom/movable/AM in H)
+				target = get_offset_target_turf(src.loc, rand(5)-rand(5), rand(5)-rand(5))
 
-			AM.loc = src.loc
-			AM.pipe_eject(0)
-			spawn(1)
-				if(AM)
-					AM.throw_at(target, 5, 1)
+				AM.loc = src.loc
+				AM.pipe_eject(0)
+				spawn(1)
+					if(AM)
+						AM.throw_at(target, 5, 1)
 
-		H.vent_gas(loc)
-		del(H)
+			H.vent_gas(loc)
+			del(H)
 
 	CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
 		if (istype(mover,/obj/item))
@@ -738,29 +739,31 @@
 				target = get_ranged_target_turf(T, direction, 10)
 
 			playsound(src, 'hiss.ogg', 50, 0, 0)
-			for(var/atom/movable/AM in H)
-				AM.loc = T
-				AM.pipe_eject(direction)
-				spawn(1)
-					if(AM)
-						AM.throw_at(target, 100, 1)
-			H.vent_gas(T)
-			del(H)
+			if(H)
+				for(var/atom/movable/AM in H)
+					AM.loc = T
+					AM.pipe_eject(direction)
+					spawn(1)
+						if(AM)
+							AM.throw_at(target, 100, 1)
+				H.vent_gas(T)
+				del(H)
 
 		else	// no specified direction, so throw in random direction
 
 			playsound(src, 'hiss.ogg', 50, 0, 0)
-			for(var/atom/movable/AM in H)
-				target = get_offset_target_turf(T, rand(5)-rand(5), rand(5)-rand(5))
+			if(H)
+				for(var/atom/movable/AM in H)
+					target = get_offset_target_turf(T, rand(5)-rand(5), rand(5)-rand(5))
 
-				AM.loc = T
-				AM.pipe_eject(0)
-				spawn(1)
-					if(AM)
-						AM.throw_at(target, 5, 1)
+					AM.loc = T
+					AM.pipe_eject(0)
+					spawn(1)
+						if(AM)
+							AM.throw_at(target, 5, 1)
 
-			H.vent_gas(T)	// all gas vent to turf
-			del(H)
+				H.vent_gas(T)	// all gas vent to turf
+				del(H)
 
 		return
 
@@ -1174,14 +1177,14 @@
 		sleep(20)	//wait until correct animation frame
 		playsound(src, 'hiss.ogg', 50, 0, 0)
 
-
-		for(var/atom/movable/AM in H)
-			AM.loc = src.loc
-			AM.pipe_eject(dir)
-			spawn(1)
-				AM.throw_at(target, 3, 1)
-		H.vent_gas(src.loc)
-		del(H)
+		if(H)
+			for(var/atom/movable/AM in H)
+				AM.loc = src.loc
+				AM.pipe_eject(dir)
+				spawn(1)
+					AM.throw_at(target, 3, 1)
+			H.vent_gas(src.loc)
+			del(H)
 
 		return