RadioButton not correctly rebuilt upon submission if 'value==0'

[mvaraujo]

For the code below, after a submission, the radio with value '0' will not be re-selected (it will not be rendered with 'selected' clause).

{{Form::open()}}
    {{Form::radio('someInput', '0')}}
    {{Form::radio('someInput', '1')}}
    {{Form::radio('someInput', '2')}}
    {{Form::radio('someInput', '3')}}
{{Form::close()}}