Build failing due to missing feature from winapi

[samipfjo]

Howdy,

Builds are currently failing due to what I assume is a change in winapi. It's an easy fix, the errhandlingapi feature flag just needs to be added to the dependency declaration.

For those needing a fix before a patch gets merged, just add winapi = { version="0.3.9", features=["errhandlingapi"] } to your Cargo.toml.

[samipfjo]

Before and after adding the feature to my project's Cargo.toml