There's a merged pull request on the void-packages repository

mumble: backport fix for segfault with pipewire
https://github.com/void-linux/void-packages/pull/43756

Description:
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#### Description
Currently due to a libpipewire change (most likely >= 0.3.68) the Mumble client segfaults when trying to change any setting. This backported patch fixes the issue (small change).

#### Testing the changes
- I tested the changes in this PR: YES

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#### Local build testing
- I built this PR locally for my native architecture, x86_68-glibc