Ticket #22900: 22900.2.diff

wp-includes/class-http.php

@@ -141 +141 @@
                 // Force some settings if we are streaming to a file and check for existence and perms of destination directory
                 if ( $r['stream'] ) {
                         $r['blocking'] = true;
-                        if ( ! is_writable( dirname( $r['filename'] ) ) )
+                        if ( ! call_user_func( 'WIN' === strtoupper( substr( PHP_OS, 0, 3 ) ) ? 'win_is_writable' : 'is_writable', dirname( $r['filename'] ) ) )
                                 return new WP_Error( 'http_request_failed', __( 'Destination directory for file streaming does not exist or is not writable.' ) );
                 }