btrfs: open code btrfs_backref_iter_free()

The helper is trivial and used only once, open code it. It's safe to
remove the 'if', the pointer is validated in build_backref_tree().

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2024-02-16 15:49:27 +01:00
commit 56430c14a6
2 changed files with 2 additions and 9 deletions