Polyfills being run more than once

[gscragg]

I have noticed an issue in IE11 with the InputEvent polyfill, where if shaka.polyfills.installAll() is called multiple times, a stack overflow error occurs when adding a change event handler to an input type="range".

Previously there there didn't seem to be an issue if we have 2 calls to installAll.

Should I be more careful around when and how this is called?

[joeyparrish]

@gscragg, it was never intended that you would call installAll() more than once, but I can't think of any reason it shouldn't still be safe. I'll see if I can fix it.

[joeyparrish]

We've pushed a fix. Please let us know how it works for you.

[gscragg]

Thanks @joeyparrish, I appreciate your speedy response.

[joeyparrish]

The fix has been cherry-picked for v2.1.6.