Fix compilation issues under ubuntu 20 and latest clang

[neshume]

No description provided.

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[romainguy]

Thank you for your submission but this is a third party library. We need to track such changes in our README (see tnt/ subdirectory) and/or move to a newer version of this library. Otherwise we'll break it next time we update it.

[neshume]

Thx guy.
I will fix that directly in the 3rd party and submit pull request there so that when you update it will be fixed. 👍🙏