patch 8.2.0619: null dict is not handled like an empty dict Commit: https://github.com/vim/vim/commit/ea04a6e8baff2f27da7cdd54bf70a5525994f76d Author: Bram Moolenaar <Bram@vim.org> Date: Thu Apr 23 13:38:02 2020 +0200 patch 8.2.0619: null dict is not handled like an empty dict Problem: Null dict is not handled like an empty dict. Solution: Fix the code and add tests. (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/5968)