Fix NPEs when swiping up from keyguard

- In onRecentsAnimationCanceled
- In applyLoadPlan

Test: Lock screen from home screen, swipe up from bottom of keyguard
Fixes: 197622171
Change-Id: Ibb6b292cb99ad2f08e402c1a6e311b819c5f7d73

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

@@ -805,7 +805,9 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
         mActivityInitListener.unregister();
         mStateCallback.setStateOnUiThread(STATE_GESTURE_CANCELLED | STATE_HANDLER_INVALIDATED);
 
-        TaskViewUtils.setDividerBarShown(mRecentsAnimationTargets.nonApps, true);
+        if (mRecentsAnimationTargets != null) {
+            TaskViewUtils.setDividerBarShown(mRecentsAnimationTargets.nonApps, true);
+        }
 
         // Defer clearing the controller and the targets until after we've updated the state
         mRecentsAnimationController = null;

quickstep/src/com/android/quickstep/views/RecentsView.java

@@ -1351,8 +1351,10 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                 }
                 Log.d(TASK_VIEW_ID_CRASH, "taskViewCount: " + getTaskViewCount()
                         + " " + sb.toString());
+                mRunningTaskViewId = -1;
+            } else {
+                mRunningTaskViewId = newRunningTaskView.getTaskViewId();
             }
-            mRunningTaskViewId = newRunningTaskView.getTaskViewId();
         }
 
         if (mNextPage == INVALID_PAGE) {