Sending ctrl-C will spawn a new pause process

[Luokun2016]

Describe the bug
Sending ctrl-C will spawn a new pause process. Causes the the executable cannot be deleted or replaced.

To Reproduce
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Expected behavior

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Additional context
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[Luokun2016]

@mpromonet fix crash at exit added this feature, please help to see what causes this problem!

[mpromonet]

Hi,
If I remember well it lay in closing audio device. Feel free to submit a PR to improve this.
Best Regards,
Michel

[Luokun2016]

Hi @mpromonet , can you help fix it? I don't know much about this.