Merge changes Iecd1303f,I2076c500 into lmp-mr1-dev

* changes:
  Fix NPE in FlashlightController
  Fix stale unlock icon

packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java

@@ -477,6 +477,11 @@ public class KeyguardBottomAreaView extends FrameLayout implements View.OnClickL
         public void onScreenTurnedOff(int why) {
             updateLockIcon();
         }
+
+        @Override
+        public void onKeyguardVisibilityChanged(boolean showing) {
+            updateLockIcon();
+        }
     };
 
     public void setKeyguardIndicationController(

packages/SystemUI/src/com/android/systemui/statusbar/policy/FlashlightController.java

@@ -308,7 +308,11 @@ public class FlashlightController {
             new CameraCaptureSession.StateListener() {
         @Override
         public void onConfigured(CameraCaptureSession session) {
-            mSession = session;
+            if (session.getDevice() == mCameraDevice) {
+                mSession = session;
+            } else {
+                session.close();
+            }
             postUpdateFlashlight();
         }