ef7e0810f2
have a null message Change-Id: I03e800aeef82ce536e768b8da6ba274d89486bb7 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/179367 Reviewed-by: Jonah Williams <jonahwilliams@google.com> Commit-Queue: Ben Konyi <bkonyi@google.com>