diff -r c7c34916027a -r 177826044cd9 wp/wp-includes/class-wp-http-ixr-client.php
--- a/wp/wp-includes/class-wp-http-ixr-client.php	Mon Oct 14 18:06:33 2019 +0200
+++ b/wp/wp-includes/class-wp-http-ixr-client.php	Mon Oct 14 18:28:13 2019 +0200
@@ -4,7 +4,6 @@
  *
  * @package WordPress
  * @since 3.1.0
- *
  */
 class WP_HTTP_IXR_Client extends IXR_Client {
 	public $scheme;
@@ -19,14 +18,14 @@
 	 * @param int|bool $port
 	 * @param int $timeout
 	 */
-	public function __construct($server, $path = false, $port = false, $timeout = 15) {
+	public function __construct( $server, $path = false, $port = false, $timeout = 15 ) {
 		if ( ! $path ) {
 			// Assume we have been given a URL instead
-			$bits = parse_url($server);
+			$bits         = parse_url( $server );
 			$this->scheme = $bits['scheme'];
 			$this->server = $bits['host'];
-			$this->port = isset($bits['port']) ? $bits['port'] : $port;
-			$this->path = !empty($bits['path']) ? $bits['path'] : '/';
+			$this->port   = isset( $bits['port'] ) ? $bits['port'] : $port;
+			$this->path   = ! empty( $bits['path'] ) ? $bits['path'] : '/';
 
 			// Make absolutely sure we have a path
 			if ( ! $this->path ) {
@@ -39,33 +38,33 @@
 		} else {
 			$this->scheme = 'http';
 			$this->server = $server;
-			$this->path = $path;
-			$this->port = $port;
+			$this->path   = $path;
+			$this->port   = $port;
 		}
 		$this->useragent = 'The Incutio XML-RPC PHP Library';
-		$this->timeout = $timeout;
+		$this->timeout   = $timeout;
 	}
 
 	/**
 	 * @return bool
 	 */
 	public function query() {
-		$args = func_get_args();
-		$method = array_shift($args);
-		$request = new IXR_Request($method, $args);
-		$xml = $request->getXml();
+		$args    = func_get_args();
+		$method  = array_shift( $args );
+		$request = new IXR_Request( $method, $args );
+		$xml     = $request->getXml();
 
 		$port = $this->port ? ":$this->port" : '';
-		$url = $this->scheme . '://' . $this->server . $port . $this->path;
+		$url  = $this->scheme . '://' . $this->server . $port . $this->path;
 		$args = array(
-			'headers'    => array('Content-Type' => 'text/xml'),
+			'headers'    => array( 'Content-Type' => 'text/xml' ),
 			'user-agent' => $this->useragent,
 			'body'       => $xml,
 		);
 
 		// Merge Custom headers ala #8145
 		foreach ( $this->headers as $header => $value ) {
-			$args['headers'][$header] = $value;
+			$args['headers'][ $header ] = $value;
 		}
 
 		/**
@@ -73,7 +72,7 @@
 		 *
 		 * @since 4.4.0
 		 *
-		 * @param array $headers Array of headers to be sent.
+		 * @param string[] $headers Associative array of headers to be sent.
 		 */
 		$args['headers'] = apply_filters( 'wp_http_ixr_client_headers', $args['headers'] );
 
@@ -83,20 +82,20 @@
 
 		// Now send the request
 		if ( $this->debug ) {
-			echo '<pre class="ixr_request">' . htmlspecialchars($xml) . "\n</pre>\n\n";
+			echo '<pre class="ixr_request">' . htmlspecialchars( $xml ) . "\n</pre>\n\n";
 		}
 
-		$response = wp_remote_post($url, $args);
+		$response = wp_remote_post( $url, $args );
 
-		if ( is_wp_error($response) ) {
-			$errno    = $response->get_error_code();
-			$errorstr = $response->get_error_message();
-			$this->error = new IXR_Error(-32300, "transport error: $errno $errorstr");
+		if ( is_wp_error( $response ) ) {
+			$errno       = $response->get_error_code();
+			$errorstr    = $response->get_error_message();
+			$this->error = new IXR_Error( -32300, "transport error: $errno $errorstr" );
 			return false;
 		}
 
 		if ( 200 != wp_remote_retrieve_response_code( $response ) ) {
-			$this->error = new IXR_Error(-32301, 'transport error - HTTP status code was not 200 (' . wp_remote_retrieve_response_code( $response ) . ')');
+			$this->error = new IXR_Error( -32301, 'transport error - HTTP status code was not 200 (' . wp_remote_retrieve_response_code( $response ) . ')' );
 			return false;
 		}
 
@@ -108,13 +107,13 @@
 		$this->message = new IXR_Message( wp_remote_retrieve_body( $response ) );
 		if ( ! $this->message->parse() ) {
 			// XML error
-			$this->error = new IXR_Error(-32700, 'parse error. not well formed');
+			$this->error = new IXR_Error( -32700, 'parse error. not well formed' );
 			return false;
 		}
 
 		// Is the message a fault?
 		if ( $this->message->messageType == 'fault' ) {
-			$this->error = new IXR_Error($this->message->faultCode, $this->message->faultString);
+			$this->error = new IXR_Error( $this->message->faultCode, $this->message->faultString );
 			return false;
 		}