[FIX] point_of_sale: bug in decimal.precision lookup
[FIX] point_of_sale: bug in decimal.precision lookup

ygol/odoo,dfang/odoo,ygol/odoo,hip-odoo/odoo,dfang/odoo,dfang/odoo,ygol/odoo,hip-odoo/odoo,dfang/odoo,hip-odoo/odoo,ygol/odoo,hip-odoo/odoo,ygol/odoo,dfang/odoo,dfang/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo