Don't use old arguments

There was usage of maskList argument. Correct name is mask_list.

Change-Id: I002d92eb4de1cd8187cfff0a18e42e58a4917f06
Fixes: rhbz#1050140
(cherry picked from commit d10e392b6242d83fc2dc7811bf7f3348f6274212)
Merge "Don't use old arguments" into havana