Ticket #10783: http.php.patch

wp-includes/http.php

@@ -280 +280 @@
                 if ( is_null($r['body']) ) {
                         // Some servers fail when sending content without the content-length
                         // header being set.
-                        $r['headers']['Content-Length'] = 0;
+                        $r['headers']['Content-Length'] = null;
                         $transports = WP_Http::_getTransport($r);
                 } else {
                         if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) {