patch 8.2.3721: using memory freed by losing the clipboard selection Commit: https://github.com/vim/vim/commit/9ac38129b6d409f73e29b1d51a5d459cf050410f Author: Bram Moolenaar <Bram@vim.org> Date: Thu Dec 2 18:42:33 2021 +0000 patch 8.2.3721: using memory freed by losing the clipboard selection Problem: Using memory freed by losing the clipboard selection. (Dominique Pell?) Solution: Check y_array is still valid after calling changed_lines(). (closes #9253)