Fix an InputStream leak in indexer-reader Utils

    /**
     * Creates and loads {@link Properties} from provided {@link Resource} if exists, and closes the resource. If not
     * exists, returns {@code null}.
     */
    public static Properties loadProperties( final Resource resource )
        throws IOException
    {
        final InputStream inputStream = resource.read();
        if ( inputStream == null )
        {
            return null;
        }
        return loadProperties( resource.read() );
    }