[FIX] report: some Wkhtmltopdf installation can return an empty version
[FIX] report: some Wkhtmltopdf installation can return an empty version

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