patch 8.1.0660: sign_cleanup() may leak memory commit https://github.com/vim/vim/commit/1ea88a3e12e5f6afc5353cd0d6e6d4f4a89ced94 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Dec 29 21:00:27 2018 +0100 patch 8.1.0660: sign_cleanup() may leak memory Problem: sign_cleanup() may leak memory. Solution: Free the group name before returning. Add a few more tests. (Yegappan Lakshmanan)