From 472e68be9ce5e85a050afa3ea42af7898dda307e Mon Sep 17 00:00:00 2001
From: oranges <email@oranges.net.nz>
Date: Tue, 10 Oct 2017 21:16:48 +1300
Subject: [PATCH 1/2] Merge pull request #31440 from kevinz000/patch-319

Fixes runtime with lavaland_equipment_pressure_check if air isn't initialized on a turf or whatever
---
 code/__HELPERS/game.dm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/code/__HELPERS/game.dm b/code/__HELPERS/game.dm
index a16f91b317..caddfdf509 100644
--- a/code/__HELPERS/game.dm
+++ b/code/__HELPERS/game.dm
@@ -570,9 +570,12 @@
 	return hex2num(copytext(hexa, 6, 8))
 
 /proc/lavaland_equipment_pressure_check(turf/T)
+	. = FALSE
 	if(!istype(T))
 		return
 	var/datum/gas_mixture/environment = T.return_air()
+	if(!istype(environment))
+		return
 	var/pressure = environment.return_pressure()
 	if(pressure <= LAVALAND_EQUIPMENT_EFFECT_PRESSURE)
-		return TRUE
+		. = TRUE