Bug 29857: (QA follow-up) Fix unit test Object.t
Unit test failling with :
# Failed test 'Exception message correct'
# at /kohadevbox/koha/t/db_dependent/Koha/Object.t line 335.
# got: 'Exception 'Koha::Exception' thrown 'Asked to embed items but its return value doesn't implement to_api'
# '
# expected: 'Asked to embed items but its return value doesn't implement to_api'
# Looks like you failed 1 test of 29.
Fixed by using $@->message like in other places.
prove t/db_dependent/Koha/Object.t
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>