patch 8.2.4706: buffer remains active with WinClosed and tabpages

Problem:    Buffer remains active if a WinClosed event throws an exception
            when there are multiple tabpages.
Solution:   Ignore aborting() when closing the buffer. (closes #10101)
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 89023a1..eb1fa04 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
Binary files differ