patch 8.2.3651: Vim9: no error for :lock or :unlock with unknown variable Commit: https://github.com/vim/vim/commit/04b568b38f848293e1ae0e680685280151acb386 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Nov 22 21:58:41 2021 +0000 patch 8.2.3651: Vim9: no error for :lock or :unlock with unknown variable Problem: Vim9: no error for :lock or :unlock with unknown variable. Solution: Give an error. (closes https://github.com/vim/vim/issues/9188)