cfg_io_source include hermit

Author: Darksonn

src/macros.rs

@@ -51,7 +51,7 @@ macro_rules! cfg_net {
 macro_rules! cfg_io_source {
     ($($item:item)*) => {
         $(
-            #[cfg(any(feature = "net", all(unix, feature = "os-ext")))]
+            #[cfg(any(feature = "net", all(any(unix, target_os = "hermit"), feature = "os-ext")))]
             #[cfg_attr(docsrs, doc(cfg(any(feature = "net", all(unix, feature = "os-ext")))))]
             $item
         )*