btrfs: scrub: simplify tree block checksum calculation

Use a simpler iteration over tree block pages, same what csum_tree_block
does: first page always exists, loop over the rest.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2020-05-29 15:54:41 +02:00
commit 521e102227