Coverity, Dereference null return value (PeriodicRotatingFileAuditEndpoint)

 @Override
    protected void preWrite(Instant instant) {
        final long recordMillis = instant.toEpochMilli();
        if (recordMillis >= nextRollover) {
            try {
                final File file = getFile();
                if (file == null) {
                    // no file is set; a direct output stream or writer was specified
                    return;
                }
                closeStreams(); // close the original file (some OSes won't let you move/rename a file that is open)
                final Path target =  file.getParentFile().toPath().resolve(file.getName() + nextSuffix);
                Files.move(file.toPath(), target, StandardCopyOption.REPLACE_EXISTING);
                setFile(file);
            } catch (IOException e) {
                audit.unableToRotateLogFile(e);
            }
            calcNextRollover(recordMillis);
        }
    }