Bug 18931 - Follow up - Typo fix in SQL statement

Bug 18931 - Follow up - Typo fix in SQL statement

Fixes the table alias in the SQL statement for items and
adds items to the if clause for showing data problems.

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit c3dca8c24b53aa63838687f536a5509855ccc21c)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 62529a83e9398e3ee23bbca7b8b6bd6fb3b509df)
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>