[FIX] hr_expense: filter with no string in search view
[FIX] hr_expense: filter with no string in search view

Elico-Corp/odoo_OCB,hip-odoo/odoo,dfang/odoo,stephen144/odoo,storm-computers/odoo,laslabs/odoo,storm-computers/odoo,bplancher/odoo,storm-computers/odoo,bplancher/odoo,optima-ict/odoo,dfang/odoo,Elico-Corp/odoo_OCB,optima-ict/odoo,laslabs/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,sysadminmatmoz/OCB,sysadminmatmoz/OCB,laslabs/odoo,hip-odoo/odoo,storm-computers/odoo,microcom/odoo,optima-ict/odoo,microcom/odoo,ygol/odoo,storm-computers/odoo,dfang/odoo,sysadminmatmoz/OCB,ygol/odoo,dfang/odoo,microcom/odoo,optima-ict/odoo,sysadminmatmoz/OCB,storm-computers/odoo,stephen144/odoo,ygol/odoo,hip-odoo/odoo,ygol/odoo,laslabs/odoo,stephen144/odoo,microcom/odoo,Elico-Corp/odoo_OCB,dfang/odoo,bplancher/odoo,stephen144/odoo,stephen144/odoo,optima-ict/odoo,microcom/odoo,bplancher/odoo,ygol/odoo,microcom/odoo,ygol/odoo,laslabs/odoo,laslabs/odoo,dfang/odoo,ygol/odoo,Elico-Corp/odoo_OCB,optima-ict/odoo,stephen144/odoo,bplancher/odoo,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,bplancher/odoo,Elico-Corp/odoo_OCB