Beside the whole commit being a nit in reality it should
bring the diffs of the spa_log_spacemap.c source file
between ZoL and delphix/zfs to 0.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Chris Dunlop <chris@onthe.net.au>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Closes#9143