Ack/Nack use closed consumer

[billowqiu]

Expected behavior

1：use Client to Subscribe a topic create an consumer-1 2：Receive message use consumer-1 3：then in some case consumer-1 is Closed. 4：use the same Client to create another consumer-2 to Ack/Nack the message

expect consumer-2 to Ack/Nack the message

Actual behavior

the Ack/Nack will use consumer-1 which is Closed before.

Tell us what happens instead

Steps to reproduce

1：use Client to Subscribe a topic create an consumer-1 2：Receive message use consumer-1 3：then in some case consumer-1 is Closed. 4：use the same Client to create another consumer-2 to Ack/Nack the message

System configuration

Pulsar version: x.y

[billowqiu]

I will give an pr to fix this issue.

[codelipenghui]

@billowqiu Do you want to contribute the fix back to apache/pulsar-client-go?

[billowqiu]

@billowqiu Do you want to contribute the fix back to apache/pulsar-client-go?

I have submitted a pr in this link: https://github.com/apache/pulsar-client-go/pull/852