* fix(#3101): fix bad reference to renderer.highlight_opened_files during BufUnload and BufReadPost * fix(#3101): only redraw renderer.highlight_opened_files during BufUnload and BufReadPost * fix(#3101): only redraw renderer.highlight_opened_files during BufUnload and BufReadPost * fix(#3101): only redraw renderer.highlight_opened_files during BufUnload and BufReadPost