fix: call fmt.Errorf with wrong error

* fix call fmt.Errorf with wrong error

* cosmetic change to re-trigger lint CI

---------

Co-authored-by: Marc Vertes <mvertes@free.fr>

cmd/yaegi/extract.go

@@ -121,7 +121,8 @@ func genLicense(fname string) (string, error) {
 		}
 		license.WriteString("//" + txt + "\n")
 	}
-	if sc.Err() != nil {
+
+	if err := sc.Err(); err != nil {
 		return "", fmt.Errorf("could not scan LICENSE file: %w", err)
 	}