Sonar improvements

robert-crypto-grpc-server/src/main/java/fr/gouv/stopc/robert/crypto/grpc/server/service/impl/CryptoServerConfigurationServiceImpl.java

@@ -24,7 +24,8 @@ public class CryptoServerConfigurationServiceImpl implements ICryptoServerConfig
         size /= 8;
         byte[] data = new byte[size];
         for (int i = 0; i < size; i++) {
-            data[i] = new Long(i).byteValue();
+        	Long l = Long.valueOf(i);
+            data[i] = l.byteValue();
         }
         return data;
     }