Fix companion path parameterization on CompanionSpawner
Fix companion path parameterization on CompanionSpawner

Summary: Use the one defined in the constructor

Reviewed By: c-ryan747

Differential Revision: D20417295

fbshipit-source-id: 3b0ca860b2590963d921a5e25fc3b093afac38ee

facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl