Before this commit: If there is no subject for message, it effectively displays "False" in case of void subject. After this commit: If there is no subject for message, it will not display "False" in case of void subject. Tasks-2156170 closes odoo/odoo#68243 X-original-commit: 4b2f0ddcbe859ec8453e537aec9d5b0685876eca Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>