Snippets for mkvtoolnix 100.0 from Nix aarch64-darwin

Sourced from https://hydra.nixos.org/log/abbi4gkjpqxqg53dmblig87y64sh28rd-mkvtoolnix-100.0.drv.

• /nix/store/a7pqfzcif0p9mbvzjyzldb56ar4y8irc-qtbase-6.11.1/lib/QtCore.framework/Headers/qdebug.h:639:11: warning: declaration shadows a typedef in the global namespace [-Wshadow]
    639 |     using UInt = typename QIntegerForSizeof<T>::Unsigned;
        |           ^