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

https://github.com/natrys/void-packages xapian-core-1.4.21
https://github.com/void-linux/void-packages/pull/40039

xapian-core: update to 1.4.21.
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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/40039.patch is attached