Fixed #1021: Bug - Some htusers are not added into the .htgroup file

    [feedquote='i-MSCP Github (stable) (nuxwin)','https://github.com/i-MSCP/imscp/commit/c9d8b47798c9102f3af1b8b056b3cd51e6dc5cab']

    Code
    1. Fixed #1021: Bug - Some htusers are not added into the .htgroup file

    [/feedquote]