Don't crash when supplicant is missing

Bug: 171798229
Test: turn on Wi-Fi on a device without supplicant

Change-Id: I8816b686ca61d331e2fed031e0537e8ffd53b1a9
1 file changed
tree: c96eacc1acc74f3ff7b42a6739a50cd14ac7c73d
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg