[FIX] website_forum: Empty question error
[FIX] website_forum: Empty question error

Steps to reproduce the bug:

- Ask a question in the forum with a title but with no content

Bug:

A traceback was raised.

opw:2093665

closes odoo/odoo#39675

X-original-commit: 51f660c9a66f2e6aecb51e476d815b2f083f843d
Signed-off-by: Simon Goffin (sig) <b3ed2cf313e7546085c3c50622143ff31e467d23@openerp.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo