patch 8.1.1019: Lua: may garbage collect function reference in use commit https://github.com/vim/vim/commit/4eefe47ea4b6bf958617e924f52bc7a409cfb0ed Author: Bram Moolenaar <Bram@vim.org> Date: Tue Mar 19 21:59:19 2019 +0100 patch 8.1.1019: Lua: may garbage collect function reference in use Problem: Lua: may garbage collect function reference in use. Solution: Keep the function name instead of the typeval. Make luaV_setref() handle funcref objects. (Ozaki Kiichi, closes #4127)