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Without this, if an error occurs during serialization you get this message: ``` Internal problem: Compiler cannot run without a compiler context. ``` Instead of the real error. Change-Id: I016ec0923a2e01b68f850988724be9d30179f78d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/98740 Commit-Queue: Jens Johansen <jensj@google.com> Reviewed-by: Jens Johansen <jensj@google.com> Auto-Submit: Jake Macdonald <jakemac@google.com>