Use copy

Author: Girgias

ext/standard/http_fopen_wrapper.c

@@ -993,7 +993,7 @@ php_stream *php_stream_url_wrap_http(php_stream_wrapper *wrapper, const char *pa
 		PHP_URL_REDIRECT_MAX, HTTP_WRAPPER_HEADER_INIT, &headers STREAMS_CC);
 
 	if (!Z_ISUNDEF(headers)) {
-		ZVAL_DUP(&BG(last_http_headers), &headers);
+		ZVAL_COPY(&BG(last_http_headers), &headers);
 
 		if (FAILURE == zend_set_local_var_str(
 				"http_response_header", sizeof("http_response_header")-1, &headers, 0)) {