Inconsistent producer start/stop

[valq7711]

As there is self._closed = False in __init__, then it requires to call await producer.stop() even if it is not started.

producer = aiokafka.AIOKafkaProducer(bootstrap_servers="localhost:9092")
del producer  # Unclosed AIOKafkaProducer

aiokafka/aiokafka/producer/producer.py

Lines 286 to 294 in 00349a8

     self._closed = False 
  
 # Warn if producer was not closed properly 
 # We don't attempt to close the Consumer, as __del__ is synchronous 
 def __del__(self, _warnings=warnings): 
     if self._closed is False: 
         _warnings.warn(f"Unclosed AIOKafkaProducer {self!r}", 
                        ResourceWarning, 
                        source=self)