Incorporate feedback

Author: adiaholic

smack-extensions/src/main/java/org/jivesoftware/smackx/caps2/Caps2Manager.java

@@ -19,6 +19,7 @@
 import java.io.UnsupportedEncodingException;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
@@ -83,8 +84,7 @@ public void publishEntityCapabilities() throws NoResponseException, XMPPErrorExc
         ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(connection());
         DiscoverInfo discoverInfo = sdm.discoverInfo(connection().getUser());
 
-        List<String> algoList = new ArrayList<String>();
-        algoList.add(defaultAlgo);
+        List<String> algoList = Collections.singletonList(defaultAlgo);
 
         Caps2Element element = generateCapabilityHash(discoverInfo, algoList);