style(all): Address suggestions made by rust-clippy

src/client/mod.rs

@@ -239,8 +239,8 @@ impl<'a> RequestBuilder<'a> {
         let mut url = try!(url);
         trace!("send {:?} {:?}", method, url);
 
-        let can_have_body = match &method {
-            &Method::Get | &Method::Head => false,
+        let can_have_body = match method {
+            Method::Get | Method::Head => false,
             _ => true
         };
 

src/client/request.rs

@@ -80,8 +80,8 @@ impl Request<Fresh> {
 
     /// Create a new client request.
     pub fn new(method: Method, url: Url) -> ::Result<Request<Fresh>> {
-        let mut conn = DefaultConnector::default();
-        Request::with_connector(method, url, &mut conn)
+        let conn = DefaultConnector::default();
+        Request::with_connector(method, url, &conn)
     }
 
     /// Create a new client request with a specific underlying NetworkStream.