Fix NPE checkjni

Fixes: 28240259

releasedCallback can be null, which we need to check for

Change-Id: Ib218e1c624be8734db5722fc625ebbd72fa099ec

1 files changed, 2 insertions, 1 deletions

diff --git a/core/java/android/view/DisplayListCanvas.java b/core/java/android/view/DisplayListCanvas.java
index 2481e049933b..415c29107a94 100644
--- a/core/java/android/view/DisplayListCanvas.java
+++ b/core/java/android/view/DisplayListCanvas.java
@@ -17,6 +17,7 @@
 package android.view;
 
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.CanvasProperty;
@@ -184,7 +185,7 @@ public class DisplayListCanvas extends Canvas {
      * any references to the functor, just that the reference from this specific
      * canvas's display list has been released.
      */
-    public void drawGLFunctor2(long drawGLFunctor, Runnable releasedCallback) {
+    public void drawGLFunctor2(long drawGLFunctor, @Nullable Runnable releasedCallback) {
         nCallDrawGLFunction(mNativeCanvasWrapper, drawGLFunctor, releasedCallback);
     }