patch 8.2.3453: autocmd not executed when editing a directory

Problem:    Autocmd not executed when editing a directory ending in a path
            separator inside try block.
Solution:   Return NOTDONE instead of FAIL. (closes #8885)
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index b2e4952..f769eec 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
Binary files differ