频道关闭时的CPU泄漏问题

[lavrock]

你好，我们发现每次频道被关闭时会有5%左右的CPU降不下来，下面代码加入最后一行后 CPU 能讲下来，不过后面的功能会出问题，有时会收不到新的频道的音频数据，能帮忙排查一下吗？

` async def disconnect(self) -> None:
"""
Disconnects the channel.
"""
logger.info(f"ai call Disconnecting from channel {self.channelId}")
if self.connection_state == 1:
return

    disconnected_future = asyncio.Future[None]()

    def callback(agora_rtc_conn: RTCConnection, conn_info: RTCConnInfo, reason):
        self.off("connection_state_changed", callback)
        if conn_info.state == 1:
            disconnected_future.set_result(None)

    self.on("connection_state_changed", callback)
    if self.stream_message_task:
        self.stream_message_task.cancel()
        try:
            await self.stream_message_task
        except asyncio.CancelledError:
            logger.info(f"ai call stream message task cancelled")
    if self.chat.message_task:
        self.chat.message_task.cancel()
        try:
            await self.chat.message_task
        except asyncio.CancelledError:
            logger.info(f"ai call message task cancelled")
    
    self.connection.disconnect()
    await disconnected_future

    self.connection.release()`