Shorten

src/dns.rs

@@ -498,7 +498,7 @@ pub fn serve_certificates<'t>(
     packet.write_u32::<BigEndian>(DNSCRYPT_CERTS_RENEWAL)?;
     packet.write_u16::<BigEndian>(1 + cert_bin.len() as u16)?;
     packet.write_u8(cert_bin.len() as u8)?;
-    packet.extend_from_slice(&cert_bin[..]);
+    packet.extend_from_slice(cert_bin);
     ensure!(packet.len() < DNS_MAX_PACKET_SIZE, "Packet too large");
 
     Ok(Some(packet))

src/dnscrypt.rs

@@ -71,7 +71,7 @@ pub fn decrypt(
 
     let cached_shared_key = {
         let mut cache = dnscrypt_encryption_params.cache.as_ref().unwrap().lock();
-        match cache.get(&client_pk[..]) {
+        match cache.get(client_pk) {
             None => None,
             Some(cached_shared_key) => Some((*cached_shared_key).clone()),
         }
@@ -83,7 +83,7 @@ pub fn decrypt(
                 .resolver_kp()
                 .compute_shared_key(client_pk)?;
             let mut client_pk_ = [0u8; DNSCRYPT_QUERY_PK_SIZE];
-            client_pk_.copy_from_slice(&client_pk[..]);
+            client_pk_.copy_from_slice(client_pk);
             dnscrypt_encryption_params
                 .cache
                 .as_ref()