Where is it appropriate and obvious, use TREE_CMP(), TREE_ISIGN() and
TREE_PCMP() instead or direct comparisons. It can make the code a lot
smaller, less error prone, and easier to read.
Sponsored-by: TrueNAS
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@truenas.com>
Closes#18259