How to patch Meltdown vulnerability on OpenBSD Unix

Originally published at: https://www.cyberciti.biz/faq/howto-patch-meltdown-vulnerability-on-openbsd-unix/

I read that OpenBSD is the first BSD family of the operating system to release updates for its stable releases to mitigate the Meltdown vulnerability. How do I patch Meltdown on OpenBSD Unix operating system?