[FIX] web: BufferedDataSet write to length field
[FIX] web: BufferedDataSet write to length field

Underscore method _.each expects an array like object when a
"length" property is present.

This was an issue with a record having a numeric "length" field set
to a non-negative value.

opw-691070

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