message: More missing DUCKDB_API
diff: namespace duckdb {
  struct CreateScalarFunctionInfo : public CreateFunctionInfo {
  - explicit CreateScalarFunctionInfo(ScalarFunction function);
  - explicit CreateScalarFunctionInfo(ScalarFunctionSet set);
  + DUCKDB_API explicit CreateScalarFunctionInfo(ScalarFunction function);
  + DUCKDB_API explicit CreateScalarFunctionInfo(ScalarFunctionSet set);
  ScalarFunctionSet functions;
  public:
  - unique_ptr<CreateInfo> Copy() const override;
  - unique_ptr<AlterInfo> GetAlterInfo() const override;
  + DUCKDB_API unique_ptr<CreateInfo> Copy() const override;
  + DUCKDB_API unique_ptr<AlterInfo> GetAlterInfo() const override;
  };
  } // namespace duckdb
  