WifiSupplicantControl: Add missing null check for psk

Test: Compiles
Change-Id: I9968950a73527c23ad576eac8a8405d6aec309b4
1 file changed
tree: d2562df5abc939b5926e7e3550829c49f17efa8e
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/
  5. PREUPLOAD.cfg