Fix QS expansion weirdness #2

Bug: 17138703
Bug: 17047680
Change-Id: I4058d9a2e349c4a52ab167638471a1eb11753380
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index 42ae0c9..f68ba1c 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -734,6 +734,7 @@
 
     @Override
     public void flingTopOverscroll(float velocity, boolean open) {
+        mLastOverscroll = 0f;
         setQsExpansion(mQsExpansionHeight);
         flingSettings(velocity, open, new Runnable() {
             @Override