Revert "Refactor get_turf proc."

This reverts commit 5344e12b25.

code/__HELPERS/unsorted.dm

@@ -1234,21 +1234,12 @@ proc/get_mob_with_client_list()
 	else return zone
 
 
-/proc/get_turf(const/atom/O)
-	if (isnull(O) || isarea(O))
-		return
-
-	var/atom/A = O
-
-	for (var/i = 0, ++i <= 20)
-		if (isturf(A))
-			return A
-
-		switch (istype(A))
-			if (1)
-				A = A.loc
-			if (0)
-				return
+/proc/get_turf(turf/location)
+	while(location)
+		if(isturf(location))
+			return location
+		location = location.loc
+	return null
 
 /proc/get(atom/loc, type)
 	while(loc)
@@ -1630,4 +1621,4 @@ atom/proc/GetTypeInAllContents(typepath)
 
 		processed |= A
 
-	return found
+	return found