fix(syntax): Fix #92.

It was a missing comma.

src/authenticator.rs

@@ -166,7 +166,7 @@ where
                         &&PollError::Expired(ref t) => {
                             self.delegate.expired(t);
                             return Err(Box::new(StringError::from(pts)));
-                        }
+                        },
                         &&PollError::AccessDenied => {
                             self.delegate.denied();
                             return Err(Box::new(StringError::from(pts)));

src/helper.rs

@@ -18,8 +18,6 @@ use crate::types::{ApplicationSecret, ConsoleApplicationSecret};
 
 /// Read an application secret from a file.
 pub fn read_application_secret(path: &Path) -> io::Result<ApplicationSecret> {
-    use std::io::Read;
-
     let mut secret = String::new();
     let mut file = fs::OpenOptions::new().read(true).open(path)?;
     file.read_to_string(&mut secret)?;