GSD-2023-1001057 fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst()

fs/ntfs3: Avoid UBSAN error on truesectorsperclst 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 v5.15.86 by commit...