Fix model_add_empty

bootstrap/core_algorithm.alc

@@ -330,8 +330,7 @@ String function store_entry(model_id : String, full_name : String, user_id : Str
 	// Go through folders first
 	while (i < list_len(hierarchy) - 1):
 		elem = list_read(hierarchy, i)
-		if (cummul != ""):
-			cummul = string_join(cummul + "/", elem)
+		cummul = string_join(cummul + "/", elem)
 
 		if (get_entry_id(cummul) == ""):
 			// Element does not exist yet!