diff --git a/wp-admin/includes/class-wp-filesystem-ftpext.php b/wp-admin/includes/class-wp-filesystem-ftpext.php
index 38536a0ea9..bba4608a8c 100644
--- a/wp-admin/includes/class-wp-filesystem-ftpext.php
+++ b/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 = '';
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index d87e43d345..2f40b5747f 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-35776';
+$wp_version = '4.5-alpha-35777';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.