patch 8.2.1220: memory access error when dragging a popup window Commit: https://github.com/vim/vim/commit/452143c6bf0dcf76ef415281b0e4fbc3edff4b6b Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 15 17:38:21 2020 +0200 patch 8.2.1220: memory access error when dragging a popup window Problem: memory access error when dragging a popup window over a buffer with folding. Solution: Avoid going over the end of the cache. (closes #6438)