[PATCH] ufs2: tindirect truncate fix

During modification of code to support UFS2 writing, the case with
"three indirect" blocks in truncate path was missed, this patch fixes
this situation.

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>