Support zip files without directory entries

[jsoriano]

Some filesystems, as some zip files, can lack of entries for directories.
When looking for files, don't rely on directories.

Fixes #816.

[elasticmachine]

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• Start Time: 2022-05-31T16:19:33.175+0000

• Duration: 5 min 47 sec

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[mtojek]

Thanks!

EDIT:

Does it need a changelog entry as it's a bugfix?

[jsoriano]

Does it need a changelog entry as it's a bugfix?

Good point, changelog added.