ext4: fix error code return to user-space in ext4getbranch()
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 v6.0.18 by commit 46a77082a70a3da5aed09ebc35904106ea2e542b. For more details please see the references link.