【OLK5.10】【bugfix】UBIFS-whiteout-dir-checksize失败

在 rename whiteout 场景下，将 dir_s 重命名为 dir_d
假设有a文件 a_dent 和 a_ino 以及 whiteout_i, 会先在 dir_d 下新建一个 b_dent，然后将 a_ino 指向 b_dent
此时因为 whiteout_i 指向 a_dent, a_dent 不会被删除。
同时 dir_s_size 减去 a_dent_size, dir_d_size 加上 b_dent_size
此时卸载后重新挂载，触发 dbg_check_filesystem 检查
```
dbg_check_filesystem
  dbg_walk_index
    check_leaf/leaf_cb
      fscki1->calc_sz += CALC_DENT_SIZE(nlen);
  check_inodes
    fscki->calc_sz != fscki->size  检查 size 异常 报错
```

【验证复现栈】
```
./ubifs_whiteout_reproducer.sh

[79433.531487] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
[79433.533169] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
[79433.534604] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
[79433.536183] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
[79433.537667] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
[79433.539952] flash size: 128 MiB
[79433.540468] page size: 2048 bytes
[79433.541132] OOB area size: 64 bytes
[79433.541773] sector size: 128 KiB
[79433.542453] pages number: 65536
[79433.543102] pages per sector: 64
[79433.543774] bus width: 8
[79433.544309] bits in sector size: 17
[79433.544982] bits in page size: 11
[79433.547237] bits in OOB size: 6
[79433.547811] flash size with OOB: 135168 KiB
[79433.548564] page address bytes: 4
[79433.549120] sector address bytes: 2
[79433.549699] options: 0x8
[79434.491795] gcov: discarding saved data for /home/lbk/hulk/fs/ubifs/debug.gcda (incompatible version)
[79434.651834] >>> raw: 160 add: 64
[79434.652724] >>> raw: 224 add: 64
[79434.653594] UBIFS error (ubi0:0 pid 2958): dbg_check_filesystem [ubifs]: directory inode 1 size is 224, but calculated size is 288
[79434.655611]  magic          0x6101831
[79434.656228]  crc            0x4f8bfb97
[79434.656951]  node_type      0 (inode node)
[79434.657653]  group_type     2 (last of node group)
[79434.658503]  sqnum          17
[79434.659035]  len            160
[79434.659596]  key            (1, inode)
[79434.660192]  creat_sqnum    1
[79434.660696]  size           224
[79434.661231]  nlink          2
[79434.661743]  atime          1642835107.0
[79434.662379]  mtime          1642835107.0
[79434.663058]  ctime          1642835107.0
[79434.663726]  uid            0
[79434.664231]  gid            0
[79434.664738]  mode           16877
[79434.665288]  flags          0x1
[79434.665875]  xattr_cnt      0
[79434.666365]  xattr_size     0
[79434.666898]  xattr_names    0
[79434.667437]  compr_type     0x0
[79434.667973]  data len       0
[79434.668488] UBIFS error (ubi0:0 pid 2958): dbg_check_filesystem [ubifs]: file-system check failed with error -22
[79434.670168] CPU: 5 PID: 2958 Comm: mount Not tainted 5.10.0-11643-g46d62946fc12-dirty #2
[79434.671524] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[79434.673343] Call Trace:
[79434.673754]  ? dump_stack+0xa6/0xd5
[79434.674356]  ? dbg_check_filesystem+0x345/0x500 [ubifs]
[79434.675203]  ? ubifs_mount+0x1ac5/0x2bf0 [ubifs]
[79434.676006]  ? legacy_get_tree+0x2c/0x80
[79434.676764]  ? vfs_get_tree+0x26/0x110
[79434.677476]  ? path_mount+0x88b/0xf80
[79434.678067]  ? do_mount+0x8d/0xc0
[79434.678644]  ? __se_sys_mount+0x1af/0x250
[79434.679299]  ? __x64_sys_mount+0x29/0x40
[79434.679998]  ? do_syscall_64+0x4d/0x70
[79434.680648]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
```

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