[Merge] ~hui.wang/pulseaudio/+git/pulseaudio:ubuntu-xenial into ~ubuntu-audio-dev/pulseaudio:ubuntu-xenial

[Hui Wang]

Since the patch was merged to upstream, I will change the merge request accordingly and resend a new merge request.

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https://code.launchpad.net/~hui.wang/pulseaudio/+git/pulseaudio/+merge/334154
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