patch 9.1.0648: [security] double-free in dialog_changed() Commit: https://github.com/vim/vim/commit/b29f4abcd4b3382fa746edd1d0562b7b48c9de60 Author: Christian Brabandt <cb@256bit.org> Date: Thu Aug 1 22:10:28 2024 +0200 patch 9.1.0648: [security] double-free in dialog_changed() Problem: [security] double-free in dialog_changed() (SuyueGuo) Solution: Only clear pointer b_sfname pointer, if it is different than the b_ffname pointer. Don't try to free b_fname, set it to NULL instead. fixes: #15403 Github Advisory: https://github.com/vim/vim/security/advisories/GHSA-46pw-v7qw-xc2f Signed-off-by: Christian Brabandt <cb@256bit.org>