Fix some minor coverity issues and one bit of SPaG
Remove an accidental extra test
Merge branch 'master' of https://github.com/OpenLightingProject/ola into libusb
Merge pull request #567 from nomis52/master

Fix some high impact defects.
Fix the build
Merge pull request #568 from peternewman/libusb

Fix some minor coverity issues and one bit of SPaG
Fix some more defects.