GSD-2021-1000157 ovl: fix leaked dentry

ovl: fix leaked dentry 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 v5.10.35 by commit 71d58457a8afc650da5d3292a7f7029317654d95, it was...