Wrong rendering for bar with clipPath + bar.radius options combination

[netil]

Description

Given below option with the combination of clipPath + bar.radius options, bar with 0 data, will be broken as shown as the screenshot.

bb.generate({
    data: {
        columns: [
        ["data", 30, 0, 100],
        ],
        type: "bar"
    },
    clipPath: false,
    bar: {
        radius: {
        ratio: 0.2
        }
    }
});

Improve not applying radius for bar type when data is 0.