patch 8.1.1825: allocating more memory than needed for extended structs commit https://github.com/vim/vim/commit/b59e7357722d977830948572a395f0a175c7ded8 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 7 21:42:24 2019 +0200 patch 8.1.1825: allocating more memory than needed for extended structs Problem: Allocating more memory than needed for extended structs. Solution: Use offsetof() instead of sizeof(). (Dominique Pelle, closes #4785)