Merge pull request #10215 from Ghommie/Ghommie-cit473

Ports "Fixes ChangeTurf CHANGETURF_INHERIT_AIR flag and add it to all calls."

code/modules/antagonists/clockcult/clock_items/replica_fabricator.dm

@@ -139,7 +139,7 @@
 	var/new_thing_type = fabrication_values["new_obj_type"]
 	if(isturf(target)) //if our target is a turf, we're just going to ChangeTurf it and assume it'll work out.
 		var/turf/T = target
-		T.ChangeTurf(new_thing_type)
+		T.ChangeTurf(new_thing_type, flags = CHANGETURF_INHERIT_AIR)
 	else
 		if(new_thing_type)
 			if(fabrication_values["dir_in_new"])

code/modules/antagonists/clockcult/clock_structures/wall_gear.dm

@@ -59,7 +59,7 @@
 				if(anchored)
 					T.PlaceOnTop(/turf/closed/wall/clockwork)
 				else
-					T.PlaceOnTop(/turf/open/floor/clockwork)
+					T.PlaceOnTop(/turf/open/floor/clockwork, flags = CHANGETURF_INHERIT_AIR)
 					new /obj/structure/falsewall/brass(T)
 				qdel(src)
 			else

code/modules/antagonists/cult/cult_structures.dm

@@ -239,9 +239,9 @@
 		var/turf/T = safepick(validturfs)
 		if(T)
 			if(istype(T, /turf/open/floor/plating))
-				T.PlaceOnTop(/turf/open/floor/engine/cult)
+				T.PlaceOnTop(/turf/open/floor/engine/cult, flags = CHANGETURF_INHERIT_AIR)
 			else
-				T.ChangeTurf(/turf/open/floor/engine/cult)
+				T.ChangeTurf(/turf/open/floor/engine/cult, flags = CHANGETURF_INHERIT_AIR)
 		else
 			var/turf/open/floor/engine/cult/F = safepick(cultturfs)
 			if(F)