Derive SchemaWrite on empty struct fails.

[marcfir]

Having a struct like this

    #[derive(Debug, SchemaWrite)]
    struct ComplexType {

    }

gives me an

error[E0308]: mismatched types
   --> src/lib.rs
    |
    |     #[derive(Debug, SchemaWrite, Default, PartialEq)]
    |                     ^^^^^^^^^^^ expected `TypeMeta`, found `Option<_>`
    |
    = note: expected enum `wincode::TypeMeta`
               found enum `std::option::Option<_>`
    = note: this error originates in the derive macro `SchemaWrite` (in Nightly builds, run with -Z macro-backtrace for more info)
```
Is this intended?

[adpthegreat]

@marcfir i have recreated your error locally and pushed a fix, it was a problem in the derive implementation for SchemaWrite on structs , fixed in #114

[marcfir]

Wow this was quick. Thx.

[adpthegreat]

@cpubot you can close this issue now