cifs: fix lock length calculation
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 v5.19.2 by commit b662279708751baea3f55c5c158614c3f5dee2ee, it was introduced in version v5.19 by commit d80c69846ddfddf437167b31ab4cd0de12f61001. For more details please see the references link.