btrfs: do not BUGON in linktofixupdir
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.235 by commit 0eaf383c6a4a83c09f60fd07a1bea9f1a9181611, it was introduced in version by commit . For more details please see the references link.