Merge pull request #3473 from Citadel-Station-13/upstream-merge-31809

[MIRROR] Cleans up some istypes not using helpers

code/modules/projectiles/guns/beam_rifle.dm

@@ -509,7 +509,7 @@
 		if(wall_pierce++ < wall_pierce_amount)
 			loc = target
 			if(prob(wall_devastate))
-				if(istype(target, /turf/closed/wall))
+				if(iswallturf(target))
 					var/turf/closed/wall/W = target
 					W.dismantle_wall(TRUE, TRUE)
 				else

code/modules/projectiles/projectile.dm

@@ -101,7 +101,7 @@
 
 /obj/item/projectile/proc/on_hit(atom/target, blocked = FALSE)
 	var/turf/target_loca = get_turf(target)
-	if(!nodamage && (damage_type == BRUTE || damage_type == BURN) && istype(target_loca, /turf/closed/wall) && prob(75))
+	if(!nodamage && (damage_type == BRUTE || damage_type == BURN) && iswallturf(target_loca) && prob(75))
 		var/turf/closed/wall/W = target_loca
 		var/mutable_appearance/decal = mutable_appearance('icons/effects/effects.dmi', "bullet_hole", TURF_DECAL_LAYER)
 		if(target == original)

code/modules/projectiles/projectile/magic.dm

@@ -76,7 +76,7 @@
 		OpenDoor(target)
 	else
 		var/turf/T = get_turf(target)
-		if(isclosedturf(T) && !istype(T, /turf/closed/indestructible))
+		if(isclosedturf(T) && !isindestructiblewall(T))
 			CreateDoor(T)
 
 /obj/item/projectile/magic/door/proc/CreateDoor(turf/T)