Despite being a 32-bit architecture, m68k has a basic
alignment of 16-bit for historic reasons. On m68k,
SAL_TYPES_ALIGNMENT8 is therefore equal to 2 and we
need to cover this case in the static asserts as well.

Change-Id: I4c756af25d57e5d49209697f6e678ef71a5845aa
Reviewed-on: https://gerrit.libreoffice.org/31878Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>