patch 8.2.4413: Vim9: Coverity warns for using NULL pointer Commit: https://github.com/vim/vim/commit/56acd1f8ed4d86e92684f90b3b8e0e9a355208d1 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Feb 18 13:24:52 2022 +0000 patch 8.2.4413: Vim9: Coverity warns for using NULL pointer Problem: Vim9: Coverity warns for using NULL pointer. Solution: Give an internal error when funcref function can't be found.