[web-audio-api] Make the last argument of decodeAudioData nullable (#14)

> Originally reported on W3C Bugzilla [ISSUE-20372](https://www.w3.org/Bugs/Public/show_bug.cgi?id=20372) Wed, 12 Dec 2012 23:08:33 GMT
> Reported by Ehsan Akhgari [:ehsan]
> Assigned to 

That would allow people to pass in undefined for example, which would hopefully make for an easier to use API.

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Reply to this email directly or view it on GitHub:
https://github.com/WebAudio/web-audio-api/issues/14