maxscale should not try to do anything when started with --config-check

./maxscale/bin/maxscale --config=/home/mysql/tmp/maxscale.cnf --config-check --log=stdout
Info : MaxScale will be run in the terminal process.
Error: Cannot create log directory: /var/log/maxscale

./maxscale/bin/maxscale --config=/home/mysql/tmp/maxscale.cnf --config-check --log=stdout --logdir=/tmp
Info : MaxScale will be run in the terminal process.
Error: Cannot create data directory '/var/lib/maxscale': 13 Permission denied
2017-09-14 17:06:36 notice : MariaDB MaxScale 2.1.7 started
2017-09-14 17:06:36 notice : MaxScale is running in process 12659
2017-09-14 17:06:36 error : Cannot create data directory '/var/lib/maxscale': 13 Permission denied