v2.0.0-pre6: Fix runtime panic on LoadLicenses()

It may be possible that the amount of segments is lower than 3 which
caused a runtime panic in the license loader. We now skip those paths to
fix that issue.

Found: https://github.com/cri-o/cri-o/runs/7037925519

Signed-off-by: Sascha Grunert <sgrunert@redhat.com>