Merge "Fix "null" toast when FillCallback.onFailure(null) called." into rvc-qpr-dev am: 906ec8897e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12279991

Change-Id: I63f90c2cd18af251b645e5484c29a07dbb81ee94

services/autofill/java/com/android/server/autofill/RemoteFillService.java

@@ -161,8 +161,9 @@ final class RemoteFillService extends ServiceConnector.Impl<IAutoFillService> {
 
                 @Override
                 public void onFailure(int requestId, CharSequence message) {
+                    String errorMessage = message == null ? "" : String.valueOf(message);
                     fillRequest.completeExceptionally(
-                            new RuntimeException(String.valueOf(message)));
+                            new RuntimeException(errorMessage));
                 }
             });
             return fillRequest;