CVE-2024-53066 nfs: Fix KMSAN warning in decode_getfattr_attrs()

In the Linux kernel, the following vulnerability has been resolved: nfs: Fix KMSAN warning in decodegetfattrattrs Fix the following KMSAN warning: CPU: 1 UID: 0 PID: 7651 Comm: cp Tainted: G B Tainted: B=BADPAGE Hardware name: QEMU Standard PC Q35 + ICH9, 2009...