kernel: fat: fix uninitialized field in nostale filehandles

In the Linux kernel, the following vulnerability has been resolved: fat: fix uninitialized field in nostale filehandles The Linux kernel CVE team has assigned CVE-2024-26973 to this issue. Upstream advisory: https://lore.kernel.org/linux-cve-announce/2024050132-CVE-2024-26973-54a3@gregkh/T...