Nodes looping back on each other

[jfinge]

With data like this:

[{name:'0',next:[{index:1},{index:3}]},{name:'1',next:[{index:2},{index:3}]},{name:'2',next:[]},{name:'3',next:[]}]

the arrow between node 1 and 3 is coming around backwards:

[jinfang134]

ehhh, it is interesting. I will check and fix it.

[jinfang134]

fixed