Fix a copy-paste error in PluginKit DeviceInterface.
Fix a copy-paste error in PluginKit DeviceInterface.

Fixes #221 - thanks to @jdt3969 for catching this.

feilen/OSVR-Core,godbyk/OSVR-Core,godbyk/OSVR-Core,leemichaelRazer/OSVR-Core,d235j/OSVR-Core,d235j/OSVR-Core,feilen/OSVR-Core,leemichaelRazer/OSVR-Core,d235j/OSVR-Core,feilen/OSVR-Core,leemichaelRazer/OSVR-Core,leemichaelRazer/OSVR-Core,OSVR/OSVR-Core,leemichaelRazer/OSVR-Core,OSVR/OSVR-Core,feilen/OSVR-Core,godbyk/OSVR-Core,godbyk/OSVR-Core,OSVR/OSVR-Core,OSVR/OSVR-Core,OSVR/OSVR-Core,d235j/OSVR-Core,godbyk/OSVR-Core,godbyk/OSVR-Core,d235j/OSVR-Core,feilen/OSVR-Core,OSVR/OSVR-Core