feat: Support for custom osk (output key) domain separators in Rosenpass app

This allows for custom protocol extensions with custom domain
separators to be used without modifying the Rosenpass source code

util/src/fd.rs

@@ -561,7 +561,7 @@ mod tests {
         let mut file = FdIo(open_nullfd()?);
         let mut buf = [0; 10];
         assert!(matches!(file.read(&mut buf), Ok(0) | Err(_)));
-        assert!(matches!(file.write(&buf), Err(_)));
+        assert!(file.write(&buf).is_err());
         Ok(())
     }
 

util/src/length_prefix_encoding/encoder.rs

@@ -618,7 +618,7 @@ mod tests {
     #[test]
     fn test_lpe_error_conversion_downcast_invalid() {
         let pos_error = PositionOutOfBufferBounds;
-        let sanity_error = SanityError::PositionOutOfBufferBounds(pos_error.into());
+        let sanity_error = SanityError::PositionOutOfBufferBounds(pos_error);
         match MessageLenSanityError::try_from(sanity_error) {
             Ok(_) => panic!("Conversion should always fail (incompatible enum variant)"),
             Err(err) => assert!(matches!(err, PositionOutOfBufferBounds)),

util/src/mem.rs

@@ -302,6 +302,6 @@ mod test_forgetting {
         drop_was_called.store(false, SeqCst);
         let forgetting = Forgetting::new(SetFlagOnDrop(drop_was_called.clone()));
         drop(forgetting);
-        assert_eq!(drop_was_called.load(SeqCst), false);
+        assert!(!drop_was_called.load(SeqCst));
     }
 }