fs/ntfs3: add fall-through between switch labels

Add fall-through to fix the warning in ntfs_fs_parse_param().

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202602041402.uojBz5QY-lkp@intel.com/
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Author: aalexandrovich

fs/ntfs3/super.c

@@ -385,6 +385,7 @@ static int ntfs_fs_parse_param(struct fs_context *fc,
 		break;
 	case Opt_acl_bool:
 		if (result.boolean) {
+			fallthrough;
 		case Opt_acl:
 #ifdef CONFIG_NTFS3_FS_POSIX_ACL
 			fc->sb_flags |= SB_POSIXACL;