patch 8.2.2036: buffer messed up if creating the quickfix window fails Commit: https://github.com/vim/vim/commit/9e40c4b15ebfbc84947a3f34b1bd53e397b57f51 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Nov 23 20:15:08 2020 +0100 patch 8.2.2036: buffer messed up if creating the quickfix window fails Problem: Current buffer is messed up if creating a new buffer for the quickfix window fails. Solution: Check that creating the buffer succeeds. (closes #7352)