Fixes a bug where the lockscreen would be frozen

When a finger was still on the screen while the screen
turned off the screen could become frozen and only recovered
by launching the camera gesture.

Change-Id: Ie7dea4152adff46f4499d3e8c4ac237f504f21eb
Fixes: 29773218
Fixes: 30154665

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

@@ -209,6 +209,9 @@ public abstract class PanelView extends FrameLayout {
 
     public void setTouchDisabled(boolean disabled) {
         mTouchDisabled = disabled;
+        if (mTouchDisabled && mTracking) {
+            onTrackingStopped(true /* expanded */);
+        }
     }
 
     @Override