Moritz
bfcd5afb2e
We don't store empty maps of field values in instances, which we forgot about when parsing. This fixes that and adds a ? operator at the right place. Change-Id: I9377a4aff186d924fbdc3324a51eed79025ceafe Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/445320 Reviewed-by: Samuel Rawlins <srawlins@google.com> Commit-Queue: Moritz Sümmermann <mosum@google.com>