deflate_medium doesn't always produce output that can be inflated.

[arskama]

No description provided.

[arskama]

I have this case happening when trying a basic deflate inflate with deflate medium, the output seems corrupted.

Please find the tarball with the issue.
I have found something that can solve the issue, though I m not sure about the validity.
My potential fix, has been tested in zlib for Chromium and helps in other cases too, such as high entropy files deflate with low window bits.

in the tarball:

1. the test
2. the test file
3. the suggested fix.
   patches.tar.gz