fix #38199 (fclose() unable to close STDOUT and STDERR)

main/streams/plain_wrapper.c

@@ -373,7 +373,7 @@ static int php_stdiop_close(php_stream *stream, int close_handle TSRMLS_DC)
 				data->file = NULL;
 			}
 		} else if (data->fd != -1) {
-#ifdef PHP_DEBUG
+#if PHP_DEBUG
 			if ((data->fd == 1 || data->fd == 2) && 0 == strcmp(sapi_module.name, "cli")) {
 				/* don't close stdout or stderr in CLI in DEBUG mode, as we want to see any leaks */
 				ret = 0;