Use MarshalIndent instead of marshal and indent

pkg/dns/treecache.go

@@ -17,7 +17,6 @@ limitations under the License.
 package dns
 
 import (
-	"bytes"
 	"encoding/json"
 	"strings"
 
@@ -37,18 +36,11 @@ func NewTreeCache() *TreeCache {
 }
 
 func (cache *TreeCache) Serialize() (string, error) {
-	b, err := json.Marshal(cache)
+	prettyJSON, err := json.MarshalIndent(cache, "", "\t")
 	if err != nil {
 		return "", err
 	}
-
-	var prettyJSON bytes.Buffer
-	err = json.Indent(&prettyJSON, b, "", "\t")
-
-	if err != nil {
-		return "", err
-	}
-	return string(prettyJSON.Bytes()), nil
+	return string(prettyJSON), nil
 }
 
 // setEntry creates the entire path if it doesn't already exist in the cache,

pkg/kubectl/resource_printer.go

@@ -267,14 +267,12 @@ func (p *JSONPrinter) PrintObj(obj runtime.Object, w io.Writer) error {
 		return err
 	}
 
-	data, err := json.Marshal(obj)
+	data, err := json.MarshalIndent(obj, "", "    ")
 	if err != nil {
 		return err
 	}
-	dst := bytes.Buffer{}
-	err = json.Indent(&dst, data, "", "    ")
-	dst.WriteByte('\n')
-	_, err = w.Write(dst.Bytes())
+	data = append(data, '\n')
+	_, err = w.Write(data)
 	return err
 }