Use the dyn syntax for trait objects

This patch changes the type of trait objects from `Trait` to `dyn
Trait`.  This fixes bare-trait-object compiler warnings.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/pws.rs b/src/pws.rs
index f283d2b..d73f44c 100644
--- a/src/pws.rs
+++ b/src/pws.rs
@@ -51,7 +51,7 @@ pub const SLOT_COUNT: u8 = 16;
 /// [`lock`]: trait.Device.html#method.lock
 /// [`GetPasswordSafe`]: trait.GetPasswordSafe.html
 pub struct PasswordSafe<'a> {
-    _device: &'a Device,
+    _device: &'a dyn Device,
 }
 
 /// Provides access to a [`PasswordSafe`][].
@@ -102,7 +102,7 @@ pub trait GetPasswordSafe {
 }
 
 fn get_password_safe<'a>(
-    device: &'a Device,
+    device: &'a dyn Device,
     user_pin: &str,
 ) -> Result<PasswordSafe<'a>, CommandError> {
     let user_pin_string = get_cstring(user_pin)?;