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/telecomm/java/android/telecom/DisconnectCause.java b/telecomm/java/android/telecom/DisconnectCause.java
index 5a97c94..ae92464 100644
--- a/telecomm/java/android/telecom/DisconnectCause.java
+++ b/telecomm/java/android/telecom/DisconnectCause.java
@@ -207,7 +207,7 @@
         return mToneToPlay;
     }
 
-    public static final Creator<DisconnectCause> CREATOR = new Creator<DisconnectCause>() {
+    public static final @android.annotation.NonNull Creator<DisconnectCause> CREATOR = new Creator<DisconnectCause>() {
         @Override
         public DisconnectCause createFromParcel(Parcel source) {
             int code = source.readInt();