[16.0][FIX] pos_safe_box: no let edit coins value when is already closed#555

kluna1998 wants to merge 1 commit into16.0tegin/cb-addons:16.0from

16.0-fix-pos_safe_box-line_ids_readonlytegin/cb-addons:16.0-fix-pos_safe_box-line_ids_readonlyCopy head branch name to clipboard