There is an updated pull request by tm512 against master on the void-packages repository

https://github.com/tm512/void-packages fceux-2.6.6
https://github.com/void-linux/void-packages/pull/45818

fceux: update to 2.6.6.
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#### Testing the changes
- I tested the changes in this PR: **briefly**

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#### Local build testing
- I built this PR locally for my native architecture, x86_64-glibc


A patch file from https://github.com/void-linux/void-packages/pull/45818.patch is attached