fix(*): misc linter issues

cmd/helm/package.go

@@ -166,7 +166,7 @@ func (p *packageCmd) clearsign(filename string) error {
 // promptUser implements provenance.PassphraseFetcher
 func promptUser(name string) ([]byte, error) {
 	fmt.Printf("Password for key %q >  ", name)
-	pw, err := terminal.ReadPassword(int(syscall.Stdin))
+	pw, err := terminal.ReadPassword(syscall.Stdin)
 	fmt.Println()
-	return []byte(pw), err
+	return pw, err
 }

cmd/helm/strvals/parser.go

@@ -153,14 +153,12 @@ func set(data map[string]interface{}, key string, val interface{}) {
 }
 
 func (t *parser) val() ([]rune, error) {
-	v := []rune{}
 	stop := runeSet([]rune{','})
 	v, _, err := runesUntil(t.sc, stop)
 	return v, err
 }
 
 func (t *parser) valList() ([]interface{}, error) {
-
 	r, _, e := t.sc.ReadRune()
 	if e != nil {
 		return []interface{}{}, e
@@ -193,7 +191,7 @@ func (t *parser) valList() ([]interface{}, error) {
 	}
 }
 
-func runesUntil(in *bytes.Buffer, stop map[rune]bool) ([]rune, rune, error) {
+func runesUntil(in io.RuneReader, stop map[rune]bool) ([]rune, rune, error) {
 	v := []rune{}
 	for {
 		switch r, _, e := in.ReadRune(); {

pkg/kube/client.go

@@ -443,7 +443,7 @@ func getCurrentObject(target *resource.Info, infos []*resource.Info) (runtime.Ob
 	if found, ok := findMatchingInfo(target, infos); ok {
 		return found.Mapping.ConvertToVersion(found.Object, found.Mapping.GroupVersionKind.GroupVersion())
 	}
-	return nil, fmt.Errorf("No resource with the name %s found.", target.Name)
+	return nil, fmt.Errorf("no resource with the name %s found", target.Name)
 }
 
 // isMatchingInfo returns true if infos match on Name and Kind.

pkg/kube/tunnel.go

@@ -96,7 +96,7 @@ func (t *Tunnel) ForwardPort() error {
 
 	select {
 	case err = <-errChan:
-		return fmt.Errorf("Error forwarding ports: %v\n", err)
+		return fmt.Errorf("forwarding ports: %v", err)
 	case <-pf.Ready:
 		return nil
 	}