patch 8.2.2267: Vim9: cannot use unlet for a dict member Commit: https://github.com/vim/vim/commit/c368957b1904bfaa2b0b52bbcade51b20173f3ed Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jan 1 19:40:02 2021 +0100 patch 8.2.2267: Vim9: cannot use unlet for a dict member Problem: Vim9: cannot use unlet for a dict member. Solution: Pass GLV_NO_DECL to get_lval(). (closes https://github.com/vim/vim/issues/7585)