There is a new pull request by classabbyamp against master on the void-packages repository

https://github.com/classabbyamp/void-packages ci/xpkgdiff-update
https://github.com/void-linux/void-packages/pull/39093

common/travis/xpkgdiff.sh: use newly-added arguments
it works without this, but it uses repo-default by default, so this should maybe speed some things up.

see also leah-neukirchen/xtools#261

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



A patch file from https://github.com/void-linux/void-packages/pull/39093.patch is attached