chore: correct typos in audioutils.cpp

[felixonmars]

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[deepin-bot]

TAG Bot

New tag: 5.12.14
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #436

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New tag: 5.12.15
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Suggest: synchronizing this PR through rebase #440

[deepin-bot]

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New tag: 5.12.16
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Suggest: synchronizing this PR through rebase #443

[deepin-bot]

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New tag: 5.12.17
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Suggest: synchronizing this PR through rebase #448

[deepin-bot]

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New tag: 5.12.18
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Suggest: synchronizing this PR through rebase #454

[deepin-bot]

TAG Bot

New tag: 5.12.19
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Suggest: synchronizing this PR through rebase #458

[deepin-bot]

TAG Bot

New tag: 5.12.20
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Suggest: synchronizing this PR through rebase #472