diff -r c7c34916027a -r 177826044cd9 wp/wp-admin/includes/class-file-upload-upgrader.php
--- a/wp/wp-admin/includes/class-file-upload-upgrader.php	Mon Oct 14 18:06:33 2019 +0200
+++ b/wp/wp-admin/includes/class-file-upload-upgrader.php	Mon Oct 14 18:28:13 2019 +0200
@@ -52,28 +52,33 @@
 	 */
 	public function __construct( $form, $urlholder ) {
 
-		if ( empty($_FILES[$form]['name']) && empty($_GET[$urlholder]) )
-			wp_die(__('Please select a file'));
+		if ( empty( $_FILES[ $form ]['name'] ) && empty( $_GET[ $urlholder ] ) ) {
+			wp_die( __( 'Please select a file' ) );
+		}
 
 		//Handle a newly uploaded file, Else assume it's already been uploaded
-		if ( ! empty($_FILES) ) {
-			$overrides = array( 'test_form' => false, 'test_type' => false );
-			$file = wp_handle_upload( $_FILES[$form], $overrides );
+		if ( ! empty( $_FILES ) ) {
+			$overrides = array(
+				'test_form' => false,
+				'test_type' => false,
+			);
+			$file      = wp_handle_upload( $_FILES[ $form ], $overrides );
 
-			if ( isset( $file['error'] ) )
+			if ( isset( $file['error'] ) ) {
 				wp_die( $file['error'] );
+			}
 
-			$this->filename = $_FILES[$form]['name'];
-			$this->package = $file['file'];
+			$this->filename = $_FILES[ $form ]['name'];
+			$this->package  = $file['file'];
 
 			// Construct the object array
 			$object = array(
-				'post_title' => $this->filename,
-				'post_content' => $file['url'],
+				'post_title'     => $this->filename,
+				'post_content'   => $file['url'],
 				'post_mime_type' => $file['type'],
-				'guid' => $file['url'],
-				'context' => 'upgrader',
-				'post_status' => 'private'
+				'guid'           => $file['url'],
+				'context'        => 'upgrader',
+				'post_status'    => 'private',
 			);
 
 			// Save the data.
@@ -82,22 +87,24 @@
 			// Schedule a cleanup for 2 hours from now in case of failed installation.
 			wp_schedule_single_event( time() + 2 * HOUR_IN_SECONDS, 'upgrader_scheduled_cleanup', array( $this->id ) );
 
-		} elseif ( is_numeric( $_GET[$urlholder] ) ) {
+		} elseif ( is_numeric( $_GET[ $urlholder ] ) ) {
 			// Numeric Package = previously uploaded file, see above.
-			$this->id = (int) $_GET[$urlholder];
+			$this->id   = (int) $_GET[ $urlholder ];
 			$attachment = get_post( $this->id );
-			if ( empty($attachment) )
-				wp_die(__('Please select a file'));
+			if ( empty( $attachment ) ) {
+				wp_die( __( 'Please select a file' ) );
+			}
 
 			$this->filename = $attachment->post_title;
-			$this->package = get_attached_file( $attachment->ID );
+			$this->package  = get_attached_file( $attachment->ID );
 		} else {
 			// Else, It's set to something, Back compat for plugins using the old (pre-3.3) File_Uploader handler.
-			if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) )
+			if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) ) {
 				wp_die( $uploads['error'] );
+			}
 
 			$this->filename = sanitize_file_name( $_GET[ $urlholder ] );
-			$this->package = $uploads['basedir'] . '/' . $this->filename;
+			$this->package  = $uploads['basedir'] . '/' . $this->filename;
 
 			if ( 0 !== strpos( realpath( $this->package ), realpath( $uploads['basedir'] ) ) ) {
 				wp_die( __( 'Please select a file' ) );
@@ -113,11 +120,12 @@
 	 * @return bool Whether the cleanup was successful.
 	 */
 	public function cleanup() {
-		if ( $this->id )
+		if ( $this->id ) {
 			wp_delete_attachment( $this->id );
 
-		elseif ( file_exists( $this->package ) )
+		} elseif ( file_exists( $this->package ) ) {
 			return @unlink( $this->package );
+		}
 
 		return true;
 	}