[scripts][loop_execute] Add output closing

beat/backend/python/scripts/loop_execute.py

@@ -195,6 +195,7 @@ def main(arguments=None):
             logger.debug("loop: Starting process")
             loop_executor.process()
             loop_executor.wait()
+            loop_executor.close()
         except (MemoryError):
             raise
         except Exception as e: