Fix Clippy (#289)

src/tests/full_test.rs

@@ -276,7 +276,7 @@ static TEST_VECTOR_X25519_P256: &str = r#"
 "#;
 
 fn decode(values: &Value, key: &str) -> Option<Vec<u8>> {
-    values[key].as_str().and_then(|s| hex::decode(&s).ok())
+    values[key].as_str().and_then(|s| hex::decode(s).ok())
 }
 
 fn populate_test_vectors(values: &Value) -> TestVectorParameters {

src/tests/mock_rng.rs

@@ -50,7 +50,7 @@ impl RngCore for CycleRng {
     #[inline]
     fn fill_bytes(&mut self, dest: &mut [u8]) {
         let len = min(self.v.len(), dest.len());
-        (&mut dest[..len]).copy_from_slice(&self.v[..len]);
+        dest[..len].copy_from_slice(&self.v[..len]);
         rotate_left(&mut self.v, len);
     }
 

src/tests/test_opaque_vectors.rs

@@ -92,7 +92,7 @@ macro_rules! parse_default {
 }
 
 fn decode(values: &JsonValue, key: &str) -> Option<Vec<u8>> {
-    values[key].as_str().and_then(|s| hex::decode(&s).ok())
+    values[key].as_str().and_then(|s| hex::decode(s).ok())
 }
 
 fn populate_test_vectors<CS: CipherSuite>(values: &JsonValue) -> OpaqueTestVectorParameters