From fc87f96e07fd75d887bf370ca8c8c649f96d1896 Mon Sep 17 00:00:00 2001
From: Dion Hulse <dd32@git.wordpress.org>
Date: Sun, 6 Dec 2015 17:06:53 +0000
Subject: [PATCH] Upgrader: FTP: Cleanup temporary files during FTP download
 failures. Props ruud@joyo Fixes #34772

git-svn-id: https://develop.svn.wordpress.org/trunk@35777 602fd350-edb4-49c9-b593-d223f7449a82
---
 .../includes/class-wp-filesystem-ftpext.php         | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/wp-admin/includes/class-wp-filesystem-ftpext.php b/src/wp-admin/includes/class-wp-filesystem-ftpext.php
index 38536a0ea9..bba4608a8c 100644
--- a/src/wp-admin/includes/class-wp-filesystem-ftpext.php
+++ b/src/wp-admin/includes/class-wp-filesystem-ftpext.php
@@ -116,12 +116,17 @@ class WP_Filesystem_FTPext extends WP_Filesystem_Base {
 		$tempfile = wp_tempnam($file);
 		$temp = fopen($tempfile, 'w+');
 
-		if ( ! $temp )
+		if ( ! $temp ) {
+			unlink( $tempfile );
 			return false;
-
-		if ( ! @ftp_fget($this->link, $temp, $file, FTP_BINARY ) )
+		}
+		
+		if ( ! @ftp_fget( $this->link, $temp, $file, FTP_BINARY ) ) {
+			fclose( $temp );
+			unlink( $tempfile );
 			return false;
-
+		}
+		
 		fseek( $temp, 0 ); // Skip back to the start of the file being written to
 		$contents = '';