Do not crash if there is no disk, just return nil instance
Do not crash if there is no disk, just return nil instance

Summary: This should not affect prod as flipper (also called sonar) should only be an internal debug product but i needed to fix it to start the app.

Reviewed By: jknoxville

Differential Revision: D10156590

fbshipit-source-id: 84a76e5cbe2f4bbe89627895efcfb7e6cdadae13

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper