Check for null when calling getCreatedActivity which is marked as Nullable

Fix: 243508135
Test: compiles
Change-Id: Id1ff2cf68fa10690a1bbec60a0c17cceab9db8d1
diff --git a/quickstep/src/com/android/quickstep/OverviewCommandHelper.java b/quickstep/src/com/android/quickstep/OverviewCommandHelper.java
index 57a26ee..875b72c 100644
--- a/quickstep/src/com/android/quickstep/OverviewCommandHelper.java
+++ b/quickstep/src/com/android/quickstep/OverviewCommandHelper.java
@@ -240,8 +240,11 @@
                 interactionHandler.onGestureCancelled();
                 cmd.removeListener(this);
 
-                RecentsView createdRecents =
-                        activityInterface.getCreatedActivity().getOverviewPanel();
+                T createdActivity = activityInterface.getCreatedActivity();
+                if (createdActivity == null) {
+                    return;
+                }
+                RecentsView createdRecents = createdActivity.getOverviewPanel();
                 if (createdRecents != null) {
                     createdRecents.onRecentsAnimationComplete();
                 }