[FIX] l10n_be_intrastat: get location_id from stock move
[FIX] l10n_be_intrastat: get location_id from stock move

purchase.order have been rewritten with cb01be2

It was not taken into account for intrastat  who still used the now not
existing "location_id" on purchase order.

This commit use instead the method _get_destination_location which
should be equivalent.

opw-677497

ygol/odoo,microcom/odoo,microcom/odoo,dfang/odoo,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,bplancher/odoo,storm-computers/odoo,hip-odoo/odoo,ygol/odoo,microcom/odoo,ygol/odoo,dfang/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,bplancher/odoo,hip-odoo/odoo,storm-computers/odoo,ygol/odoo,sysadminmatmoz/OCB,storm-computers/odoo,storm-computers/odoo,dfang/odoo,storm-computers/odoo,laslabs/odoo,ygol/odoo,microcom/odoo,dfang/odoo,sysadminmatmoz/OCB,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,microcom/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,ygol/odoo,hip-odoo/odoo,bplancher/odoo,laslabs/odoo,laslabs/odoo,bplancher/odoo,laslabs/odoo,sysadminmatmoz/OCB,microcom/odoo,bplancher/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,laslabs/odoo,dfang/odoo,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,storm-computers/odoo,Elico-Corp/odoo_OCB,bplancher/odoo,dfang/odoo,laslabs/odoo,ygol/odoo