Null value throws error later on

[baptisteghesquiere]

l10n-belgium/companyweb_base/models/res_partner.py

Line 291 in cce1115

self.cweb_country = self._cweb_get_country(

When the value of CountryCode is empty, this function fails because in the function you do a upper(), but you can not perform an upper() on a null value.

This should be better handled as this throws an awfull stack trace error.