Merge pull request #3271 from Citadel-Station-13/upstream-merge-31440

[MIRROR] Fixes runtime with lavaland_equipment_pressure_check if air isn't initialized on a turf or whatever

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