Parcel: noop upon double recycle

Fix this scenario:

  Parcel p = Parcel.obtain();
  p.recycle();
  p.recycle(); // illegal but possible

  Parcel p1 = Parcel.obtain();
  Parcel p2 = Parcel.obtain();

  ASSERT_TRUE(p1 != p2); // fail!

Signed-off-by: Jintao Zhu <zhu.jintao@gm.com>

Change-Id: Ied25188549801122874a05c2e66969e1f281b346

core/java/android/os/Parcel.java

@@ -560,9 +560,11 @@ public final class Parcel {
      */
     public final void recycle() {
         if (mRecycled) {
-            Log.w(TAG, "Recycle called on unowned Parcel. (recycle twice?) Here: "
+            Log.wtf(TAG, "Recycle called on unowned Parcel. (recycle twice?) Here: "
                     + Log.getStackTraceString(new Throwable())
                     + " Original recycle call (if DEBUG_RECYCLE): ", mStack);
+
+            return;
         }
         mRecycled = true;