[FIX] sale_stock: _update_line_quantity
[FIX] sale_stock: _update_line_quantity

rev 1168e73a72ad8824c64f308d38d263d7aba456de wrongly assumed that `message_post` is api multi

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