Kills off three more flags from flags_2

code/game/turfs/open.dm

@@ -159,7 +159,7 @@
 	for(var/obj/I in contents)
 		if(I.resistance_flags & FREEZE_PROOF)
 			return
-		if(!(I.flags_2 & FROZEN_2)) //let it go
+		if(!(I.obj_flags & FROZEN))
 			I.make_frozen_visual()
 	for(var/mob/living/L in contents)
 		if(L.bodytemperature <= 50)

code/game/turfs/turf.dm

@@ -184,7 +184,7 @@
 	//melting
 	if(isobj(AM) && air && air.temperature > T0C)
 		var/obj/O = AM
-		if(O.flags_2 & FROZEN_2)
+		if(O.obj_flags & FROZEN)
 			O.make_unfrozen()
 
 /turf/proc/is_plasteel_floor()