Merge changes from topic "presubmit-am-3741432fa32f48a290800d57fe4e6e74" into sc-v2-dev-plus-aosp

* changes:
  [automerge] Add leash check in PipTaskOrganizer#fadeExistingPip 2p: 4353053c87
  Add leash check in PipTaskOrganizer#fadeExistingPip

libs/WindowManager/Shell/src/com/android/wm/shell/pip/PipTaskOrganizer.java

@@ -825,6 +825,10 @@ public class PipTaskOrganizer implements ShellTaskOrganizer.TaskListener,
     }
 
     private void fadeExistingPip(boolean show) {
+        if (mLeash == null || !mLeash.isValid()) {
+            Log.w(TAG, "Invalid leash on fadeExistingPip: " + mLeash);
+            return;
+        }
         final float alphaStart = show ? 0 : 1;
         final float alphaEnd = show ? 1 : 0;
         mPipAnimationController