Some deb files with xz compression files can not be opened

[ZetaTwo]

Attached is an archive with .deb files, all taken from the Ubuntu or Debian package repository. They all use XZ compression and none of them can currently be opened with the library. They all result in one of the following errors:

1. xz: file format not recognized
2. xz: data is truncated or corrupt

problem-deb2.tgz

[ZetaTwo]

Ok, I think this is because they are in the old format so this is essentially a dupe of #50

[ZetaTwo]

nvm, I was accessing the data via: debFile.ArContent -> arEntry.Tarfile() which breaks when xz is the underlying compression because the same input stream is read twice. The correct way is to just read debFile.Data