fix clippy fiascoes introduced in #1437

crypto/src/signature.rs

@@ -277,7 +277,7 @@ mod tests {
         let mut secp_addr = Address::new_secp256k1(&pub_key.serialize()).unwrap();
         for network in [Network::Mainnet, Network::Testnet] {
             let address = secp_addr.set_network(network);
-            assert!(verify_secp256k1_sig(&signature, &data, &address).is_ok());
+            assert!(verify_secp256k1_sig(&signature, &data, address).is_ok());
         }
     }
 
@@ -314,7 +314,7 @@ mod tests {
     }
 
     fn generate_signature(priv_key: &SecretKey, msg: &Message) -> [u8; 65] {
-        let (sig, recovery_id) = sign(&msg, &priv_key);
+        let (sig, recovery_id) = sign(msg, priv_key);
         let mut signature = [0; 65];
         signature[..64].copy_from_slice(&sig.serialize());
         signature[64] = recovery_id.serialize();