WifiSupplicantControl: Add missing null check for psk am: c7ddffabcd am: dacf980039
am: 3f0f47d2f2

Change-Id: Ib2371157a5da9761894ca7b75b6eb03cae026aa2
tree: 5dd120a6448740bfcb16a1e2bad01a18a12bd748
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/
  5. PREUPLOAD.cfg