[FIX] product: `_compute_currency_id` multi-company
[FIX] product: `_compute_currency_id` multi-company

By default, the multi-company record rule on
`product.template` is disabled, meaning the products
are shared between the companies.
https://github.com/odoo/odoo/blob/10.0/addons/product/security/product_security.xml#L48

Nevertheless, the multi-company record rule on
`res.company` is well activated, and therefore
this might happen that you can see a `product.template`
for which you are not allowed to read the company.

If you attempt to read something from this company, you must
therefore do it as sudo :)

opw-693209

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