Remove use of private APIs

Change-Id: I3e28763075f8e92391796dc009214c9fa8f50008
diff --git a/src/com/android/launcher2/SmoothPagedView.java b/src/com/android/launcher2/SmoothPagedView.java
index e6414d9..7e47f1a 100644
--- a/src/com/android/launcher2/SmoothPagedView.java
+++ b/src/com/android/launcher2/SmoothPagedView.java
@@ -175,7 +175,7 @@
                 final float e = (float) Math.exp((now - mSmoothingTime) / SMOOTHING_CONSTANT);
 
                 final float dx = mTouchX - mUnboundedScrollX;
-                scrollTo(Math.round(mUnboundedScrollX + dx * e), mScrollY);
+                scrollTo(Math.round(mUnboundedScrollX + dx * e), getScrollY());
                 mSmoothingTime = now;
 
                 // Keep generating points as long as we're more than 1px away from the target