saltstack/salt — pull request #2879 by techhat (2012-12-12 18:07:36+00:00)
Title: Somebody forgot to return False on non-Macs

If you don't return False, you get things like:

None.get_output_volume:
Get the output volume (range 0 to 100)
CLI Example::
salt '*' desktop.get_output_volume

On unsupported systems.