Fixing tests and review comments

util/https-fetch/examples/fetch.rs

@@ -1,12 +1,15 @@
 extern crate https_fetch;
 
 use std::io;
+use std::sync::Arc;
+use std::sync::atomic::AtomicBool;
 use https_fetch::*;
 
 fn main() {
 	let client = Client::new().unwrap();
+	let aborted = Arc::new(AtomicBool::new(false));
 
-	client.fetch(Url::new("github.com", 443, "/").unwrap(), Box::new(io::stdout()), |result| {
+	client.fetch(Url::new("github.com", 443, "/").unwrap(), Box::new(io::stdout()), aborted, |result| {
 		assert!(result.is_ok());
 	}).unwrap();
 }