91540068d3
When generating the file
`pkg/analyzer/lib/src/dart/error/syntactic_errors.g.dart`, we now need
for the top level variable `fastaAnalyzerErrorCodes` to have type
`List<ErrorCode?>`.
The generated file was updated in
9f986d2501 as part of migrating the
analyzer package to null safety; this updates the code generator so
that when it is re-run in the future we won't lose the change.
Change-Id: I893c1fe6f206d5dfbfebbf7bb80d5a00fc7b56be
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182365
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>