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>

Author: saschagrunert

v2/classifier.go

@@ -287,6 +287,10 @@ func (c *Classifier) LoadLicenses(dir string) error {
 		relativePath := strings.Replace(f, dir, "", 1)
 		sep := fmt.Sprintf("%c", os.PathSeparator)
 		segments := strings.Split(relativePath, sep)
+		if len(segments) < 3 {
+			c.tc.trace("Insufficient segment count for path: %s", relativePath)
+			continue
+		}
 		category, name, variant := segments[1], segments[2], segments[3]
 		b, err := ioutil.ReadFile(f)
 		if err != nil {