From b875264a73a3d3134f29bb1766f0efdd05ca2c7c Mon Sep 17 00:00:00 2001
From: John Blackbourn <johnbillion@git.wordpress.org>
Date: Thu, 8 Sep 2016 13:44:32 +0000
Subject: [PATCH] Formatting: Don't send an HTTP status code in
 `wp_send_json()` by default. This avoids clobbering an HTTP status code that
 may have been set prior to calling this function.

Props westonruter
See #35666


git-svn-id: https://develop.svn.wordpress.org/trunk@38576 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/functions.php | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/wp-includes/functions.php b/src/wp-includes/functions.php
index bcb930e183..11645a842a 100644
--- a/src/wp-includes/functions.php
+++ b/src/wp-includes/functions.php
@@ -3101,9 +3101,11 @@ function _wp_json_prepare_data( $data ) {
  *                           then print and die.
  * @param int   $status_code The HTTP status code to output.
  */
-function wp_send_json( $response, $status_code = 200 ) {
+function wp_send_json( $response, $status_code = null ) {
 	@header( 'Content-Type: application/json; charset=' . get_option( 'blog_charset' ) );
-	status_header( $status_code );
+	if ( null !== $status_code ) {
+		status_header( $status_code );
+	}
 	echo wp_json_encode( $response );
 	if ( wp_doing_ajax() )
 		wp_die();
@@ -3120,7 +3122,7 @@ function wp_send_json( $response, $status_code = 200 ) {
  * @param mixed $data        Data to encode as JSON, then print and die.
  * @param int   $status_code The HTTP status code to output.
  */
-function wp_send_json_success( $data = null, $status_code = 200 ) {
+function wp_send_json_success( $data = null, $status_code = null ) {
 	$response = array( 'success' => true );
 
 	if ( isset( $data ) )
@@ -3144,7 +3146,7 @@ function wp_send_json_success( $data = null, $status_code = 200 ) {
  * @param mixed $data        Data to encode as JSON, then print and die.
  * @param int   $status_code The HTTP status code to output.
  */
-function wp_send_json_error( $data = null, $status_code = 200 ) {
+function wp_send_json_error( $data = null, $status_code = null ) {
 	$response = array( 'success' => false );
 
 	if ( isset( $data ) ) {