Bug 24002: Incorrect DATE value: '00-00-0000' in NewsChannels.pm

Bug 24002: Incorrect DATE value: '00-00-0000' in NewsChannels.pm

% prove  xt/author/valid-templates.t

DBD::mysql::st execute failed: Incorrect DATE value: '00-00-0000' [for Statement "
     SELECT opac_news.*,timestamp AS newdate,
     borrowers.title AS author_title,
     borrowers.firstname AS author_firstname,
     borrowers.surname AS author_surname
     FROM   opac_news
     LEFT JOIN borrowers on borrowers.borrowernumber = opac_news.borrowernumber
     WHERE   (
        expirationdate >= CURRENT_DATE()
        OR    expirationdate IS NULL
        OR    expirationdate = '00-00-0000'
     )
     AND   DATE(timestamp) < DATE_ADD(CURDATE(), INTERVAL 1 DAY)
     AND   (opac_news.lang = '' OR opac_news.lang = ?)
     AND   (opac_news.branchcode IS NULL OR opac_news.branchcode = ?)
     ORDER BY number
    " with ParamValues: 0='OpacNavRight_', 1=''] at /kohadevbox/koha/C4/NewsChannels.pm line 216.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>