fsck.f2fs: remove corrupted data indices in direct node blocks
fsck.f2fs: remove corrupted data indices in direct node blocks

Previously, only data blocks locating in its inode block could be fixed.
This patch investigates direct node blocks to fix indices too.

Signed-off-by: Jaegeuk Kim <71255387a32c360dfbe6dfb7aaeb123bf1dc8cb6@kernel.org>

seamlik/f2fs-tools,seamlik/f2fs-tools,TurboROM/external_f2fs-tools,TurboROM/external_f2fs-tools