[Master] Compressing the message body when sending a message leads to high memory usage

[cserwen]

BUG REPORT

1. Please describe the issue you observed:

   • What did you do (The steps to reproduce)?
     We started some producers to synchronously send some messages with a message body larger than 4k
   • What did you expect to see?
     The message is produced normally and the program memory usage is normal
   • What did you see instead?
     The message is produced normally, but the program memory usage is high

2. Please tell us about your environment:

   • What is your OS?
     Linux
   • What is your client version?
     2.1.0 release
   • What is your RocketMQ version?
     4.8.0

3. Other information (e.g. detailed explanation, logs, related issues, suggestions on how to fix, etc):
   The zlibWriterPools does not work.

[cserwen]

After fix it