cifs: Fix xid leak in cifs_flock()
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 v5.15.76 by commit 8905d13b9ede4caa88c577faed832d6c7383f4fb, it was introduced in version v5.5 by commit d0677992d2af3d65f1c1c21de3323d09d4891537. For more details please see the references link.