Fix crash when scanner gets results that don't match the request

Before this, when WifiScanningService processed single scan results from
supplicant that only contained results that did not match a request the
filter code would return null indicating that the results should not be
delivered, causing a NPE later. This change updates the meaning of the
bucket index that the single scan code provides to the filtering code to
instead force it to always include scan results.

Change-Id: I65cd57b14abacec3f407991188c570601d05ac77
Fixes: 28794598
4 files changed
tree: 0cb2cf5f55b8fe93a55a4b4bffec7298e4dd0cd4
  1. service/
  2. tests/