Fix Inconsistent helm repo list behavior

Signed-off-by: Kay Yan <kay.yan@daocloud.io>

cmd/helm/repo_list.go

@@ -39,7 +39,7 @@ func newRepoListCmd(out io.Writer) *cobra.Command {
 		ValidArgsFunction: noCompletions,
 		RunE: func(cmd *cobra.Command, args []string) error {
 			f, err := repo.LoadFile(settings.RepositoryConfig)
-			if isNotExist(err) || (len(f.Repositories) == 0 && !(outfmt == output.JSON || outfmt == output.YAML)) {
+			if (isNotExist(err) || len(f.Repositories) == 0) && !(outfmt == output.JSON || outfmt == output.YAML) {
 				return errors.New("no repositories to show")
 			}