diff -r c7c34916027a -r 177826044cd9 wp/wp-includes/ms-files.php
--- a/wp/wp-includes/ms-files.php	Mon Oct 14 18:06:33 2019 +0200
+++ b/wp/wp-includes/ms-files.php	Mon Oct 14 18:28:13 2019 +0200
@@ -11,8 +11,9 @@
 define( 'SHORTINIT', true );
 require_once( dirname( dirname( __FILE__ ) ) . '/wp-load.php' );
 
-if ( !is_multisite() )
+if ( ! is_multisite() ) {
 	die( 'Multisite support not enabled' );
+}
 
 ms_file_constants();
 
@@ -23,24 +24,27 @@
 	die( '404 — File not found.' );
 }
 
-$file = rtrim( BLOGUPLOADDIR, '/' ) . '/' . str_replace( '..', '', $_GET[ 'file' ] );
-if ( !is_file( $file ) ) {
+$file = rtrim( BLOGUPLOADDIR, '/' ) . '/' . str_replace( '..', '', $_GET['file'] );
+if ( ! is_file( $file ) ) {
 	status_header( 404 );
 	die( '404 — File not found.' );
 }
 
 $mime = wp_check_filetype( $file );
-if ( false === $mime[ 'type' ] && function_exists( 'mime_content_type' ) )
-	$mime[ 'type' ] = mime_content_type( $file );
+if ( false === $mime['type'] && function_exists( 'mime_content_type' ) ) {
+	$mime['type'] = mime_content_type( $file );
+}
 
-if ( $mime[ 'type' ] )
-	$mimetype = $mime[ 'type' ];
-else
+if ( $mime['type'] ) {
+	$mimetype = $mime['type'];
+} else {
 	$mimetype = 'image/' . substr( $file, strrpos( $file, '.' ) + 1 );
+}
 
 header( 'Content-Type: ' . $mimetype ); // always send this
-if ( false === strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS' ) )
+if ( false === strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS' ) ) {
 	header( 'Content-Length: ' . filesize( $file ) );
+}
 
 // Optional support for X-Sendfile and X-Accel-Redirect
 if ( WPMU_ACCEL_REDIRECT ) {
@@ -52,7 +56,7 @@
 }
 
 $last_modified = gmdate( 'D, d M Y H:i:s', filemtime( $file ) );
-$etag = '"' . md5( $last_modified ) . '"';
+$etag          = '"' . md5( $last_modified ) . '"';
 header( "Last-Modified: $last_modified GMT" );
 header( 'ETag: ' . $etag );
 header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', time() + 100000000 ) . ' GMT' );
@@ -60,19 +64,20 @@
 // Support for Conditional GET - use stripslashes to avoid formatting.php dependency
 $client_etag = isset( $_SERVER['HTTP_IF_NONE_MATCH'] ) ? stripslashes( $_SERVER['HTTP_IF_NONE_MATCH'] ) : false;
 
-if ( ! isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) )
+if ( ! isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
 	$_SERVER['HTTP_IF_MODIFIED_SINCE'] = false;
+}
 
 $client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE'] );
 // If string is empty, return 0. If not, attempt to parse into a timestamp
 $client_modified_timestamp = $client_last_modified ? strtotime( $client_last_modified ) : 0;
 
 // Make a timestamp for our most recent modification...
-$modified_timestamp = strtotime($last_modified);
+$modified_timestamp = strtotime( $last_modified );
 
 if ( ( $client_last_modified && $client_etag )
-	? ( ( $client_modified_timestamp >= $modified_timestamp) && ( $client_etag == $etag ) )
-	: ( ( $client_modified_timestamp >= $modified_timestamp) || ( $client_etag == $etag ) )
+	? ( ( $client_modified_timestamp >= $modified_timestamp ) && ( $client_etag == $etag ) )
+	: ( ( $client_modified_timestamp >= $modified_timestamp ) || ( $client_etag == $etag ) )
 	) {
 	status_header( 304 );
 	exit;