0.22.0: zlib(finalizer): the stream was freed prematurely

[zhulik]

Hello,

after updating to 0.22.0 from 0.19.2 and making adjustments for the new read/write interface I started getting warnings from zlib:

zlib(finalizer): the stream was freed prematurely.

Besides that my code works as expected.

I couldn't precisely trace what exactly causes printing of this warning, do you have any ideas where I can start from?

Thanks!