All Parcelable CREATOR fields are @NonNull.

If they were null, then the Parcelable would fail to work.

Bug: 126726802
Test: manual
Change-Id: I7929ffa2f20e5de1c8e68e8263cca99496e9d014
Exempt-From-Owner-Approval: Trivial API annotations
diff --git a/core/java/android/hardware/location/NanoAppMessage.java b/core/java/android/hardware/location/NanoAppMessage.java
index 9f90d59..d5e3529 100644
--- a/core/java/android/hardware/location/NanoAppMessage.java
+++ b/core/java/android/hardware/location/NanoAppMessage.java
@@ -134,7 +134,7 @@
         out.writeByteArray(mMessageBody);
     }
 
-    public static final Creator<NanoAppMessage> CREATOR =
+    public static final @android.annotation.NonNull Creator<NanoAppMessage> CREATOR =
             new Creator<NanoAppMessage>() {
                 @Override
                 public NanoAppMessage createFromParcel(Parcel in) {