Yup -c failed when there is no unused dependencies to uninstall

[Galiley]

The issue is in the file clean/clean.go

// Clear unused packs
output.Printf("Finding unused dependencies")
pac := exec.Command("pacman", "-Qtdq")
var packs []string
if out, err := pac.Output(); err == nil {
	for _, pack := range strings.Split(string(out), "\n") {
		if len(pack) > 1 {
			packs = append(packs, pack)
		}
	}
}

When there is no unused dependencies, packs should be empty

packs = append([]string{"pacman", "-Rns"}, packs...)
rem := exec.Command("sudo", packs...)
output.SetStd(rem)
if err := rem.Run(); err != nil {
	return err
}


return nil

This statement should be run only if packs isn't empty.