CVE-2024-53234 erofs: handle NONHEAD !delta[1] lclusters gracefully

In the Linux kernel, the following vulnerability has been resolved: erofs: handle NONHEAD !delta1 lclusters gracefully syzbot reported a WARNING in iomapiterdone: iomapfiemap+0x73b/0x9b0 fs/iomap/fiemap.c:80 ioctlfiemap fs/ioctl.c:220 inline Generally, NONHEAD lclusters won't have delta1==0, exce...