Don't crash Tethering service when WiFi feature is missing

Bug: 175430552
Test: disable WiFi feature on device with wlan0

Change-Id: Ie8b422ed6e0a0a98eb1c7e6072464859d9083ba5
2 files changed
tree: 88368da98a6e15d088979de97aea215003f8ed12
  1. tests/
  2. Tethering/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING