patch 9.0.0237: Mac: cannot build if dispatch.h is not available Commit: https://github.com/vim/vim/commit/e24a14118c29d910d3be59203332768b5fbd93e8 Author: Evan Miller <emmiller@gmail.com> Date: Sun Aug 21 17:24:00 2022 +0100 patch 9.0.0237: Mac: cannot build if dispatch.h is not available Problem: Mac: cannot build if dispatch.h is not available. Solution: Add #ifdef. (Evan Miller, closes https://github.com/vim/vim/issues/10954)