shouldn't remove the cfg(asio)

Author: Sin-tel

asio-sys/src/lib.rs

@@ -4,6 +4,9 @@
 extern crate num_derive;
 extern crate num_traits;
 
+#[cfg(asio)]
 pub mod bindings;
+#[cfg(asio)]
 pub use bindings::errors::{AsioError, LoadDriverError};
+#[cfg(asio)]
 pub use bindings::*;