Merge "Fixes NPE in AbsSwipeUpHandler." into sc-dev am: cf6900d9ee

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14436551

Change-Id: Ia089634e14dc1db6f50985369d6b2a43e894c1b0

quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java

@@ -1701,7 +1701,7 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
         // No need to apply any transform if there is ongoing swipe-pip-to-home animator since
         // that animator handles the leash solely.
         if (mRecentsAnimationTargets != null && !mIsSwipingPipToHome) {
-            if (mRecentsViewScrollLinked) {
+            if (mRecentsViewScrollLinked && mRecentsView != null) {
                 mTaskViewSimulator.setScroll(mRecentsView.getScrollOffset());
             }
             mTaskViewSimulator.apply(mTransformParams);