Fix signal quality return value when it failed to detect

Change-Id: Iae7c57b18e43621be6af076497bdb8480a166d06
1 file changed
tree: 6f73a49385fbf11ad257d7355a38a31f9f04d3c0
  1. .gitreview
  2. edge-monitoring/
  3. slack-notifier/