change from feedback

Author: devnexen

sapi/cli/php_cli_server.c

@@ -1699,7 +1699,7 @@ static void php_cli_server_client_save_header(php_cli_server_client *client)
 		zend_hash_add(&client->request.headers_original_case, client->current_header_name, &tmp);
 	} else {
 		zend_string *curval = Z_STR_P(entry);
-		zend_string *newval = zend_string_alloc(ZSTR_LEN(curval) + ZSTR_LEN(client->current_header_value) + 3, /* persistent */true);
+		zend_string *newval = zend_string_safe_alloc(1, ZSTR_LEN(curval) + ZSTR_LEN(client->current_header_value) + 3, 0, /* persistent */true);
 
 		memcpy(ZSTR_VAL(newval), ZSTR_VAL(curval), ZSTR_LEN(curval));
 		memcpy(ZSTR_VAL(newval) + ZSTR_LEN(curval), ", ", 2);