Two years ago, commit c8cfca25 changed an error to a warning but forgot to add a check for 'warningLevel'.
This partially addresses issue #20 (closed).
Reported-by: Vincent Lefevre
Signed-off-by: Benno Schulenberg email@example.com
(The second commit suppresses four more warnings when 'warningLevel' is zero. There are still other places where 'warningLevel' is not checked, but... this will have to do for now.)