CircularProgress timer leak

[w3dot0]

See https://github.com/callemall/material-ui/blob/master/src/circular-progress.jsx#L75

Once _scalePath() is called by componentDidMount it will never terminate, even after the progress component is unmounted.

A simple fix might be to move the setTimeout call to the end of the function.

[oliviertassinari]

Don't we have the same issue with the RefreshIndicator component?
Could you submit a PR with somethings like https://github.com/callemall/material-ui/blob/master/src/menus/icon-menu.jsx#L87?

[wenzowski]

This still seems to be an issue in 0.14.4

[oliviertassinari]

@wenzowski What makes you say so?

[wenzowski]

@oliviertassinari Was my own fault for conditionally rendering the component instead of passing status="hide". As long as status is set properly, there's no leak.