Snippets for mkvtoolnix 101.0 from Alpine riscv64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-riscv64/community/mkvtoolnix/mkvtoolnix-101.0-r0.log.

• src/input/r_ogm.cpp:765:113: warning: comparison is always false due to limited range of data type [-Wtype-limits]
    765 |         chapter_string.erase(std::remove_if(chapter_string.begin(), chapter_string.end(), [](char c) { return c < 0; }), chapter_string.end());
        |                                                                                                               ~~^~~