Gzip Gunzip: always flush busy bufs when the incoming chain is NULL.

[Yichun Zhang (agentzh)]

Hello!

On Wed, Nov 5, 2014 at 5:02 PM, Yichun Zhang (agentzh) wrote:
> Sorry, I was wrong in this part. The content handler actually checked
> the r->buffered flag instead of checking its own busy bufs.

Sorry again, it actually checked "c->buffered &
NGX_HTTP_LOWLEVEL_BUFFERED". This condition is indeed too strong and
I've made it check its own busy bufs instead.

Now there is no problem without my patch.

Thanks!
-agentzh