Use memset() to null out the btrfs_delayed_ref_root of
btrfs_transaction instead of setting all the members to 0 by hand.
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NAlexandru Moise <00moses.alexander00@gmail.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>