Pie charts data label positioning doesn't ignore hidden slices

[dejongch]

If you have a Pie chart with hidden slices, the positioning of the data labels is very messy because it is positioning them around the hidden slices data labels.

http://jsfiddle.net/z9NN9/

I found that this issue is caused here:

// arrange points for detection collision
each(data, function (point) {
    if (point.dataLabel) { // it may have been cancelled in the base method (#407)
        halves[point.half].push(point);
    }
});

if this is replaces with:

// arrange points for detection collision
each(data, function (point) {
    if (point.dataLabel && point.visible) { // it may have been cancelled in the base method (#407)
        halves[point.half].push(point);
    }
});

the issue no longer occurs.

[TorsteinHonsi]

Thanks!