Parse nulls as None on nested serde structs #473
Merged
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When parsing a structure nested inside an untagged enum serde treats
keys with a null value as Unit instead of calling visit_none. This
causes an error of "invalid type: null, expected an
RFC3339-formatted
Option<OffsetDateTime>
". This change just adds animplementation for visit_unit so the value will be parsed as None as
expected.