diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-admin/includes/class-file-upload-upgrader.php
--- a/wp/wp-admin/includes/class-file-upload-upgrader.php	Tue Oct 22 16:11:46 2019 +0200
+++ b/wp/wp-admin/includes/class-file-upload-upgrader.php	Tue Dec 15 13:49:49 2020 +0100
@@ -56,7 +56,7 @@
 			wp_die( __( 'Please select a file' ) );
 		}
 
-		//Handle a newly uploaded file, Else assume it's already been uploaded
+		// Handle a newly uploaded file. Else, assume it's already been uploaded.
 		if ( ! empty( $_FILES ) ) {
 			$overrides = array(
 				'test_form' => false,
@@ -71,7 +71,7 @@
 			$this->filename = $_FILES[ $form ]['name'];
 			$this->package  = $file['file'];
 
-			// Construct the object array
+			// Construct the object array.
 			$object = array(
 				'post_title'     => $this->filename,
 				'post_content'   => $file['url'],
@@ -99,7 +99,8 @@
 			$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'] ) ) {
+			$uploads = wp_upload_dir();
+			if ( ! ( $uploads && false === $uploads['error'] ) ) {
 				wp_die( $uploads['error'] );
 			}