fix destructor

chaos/common/message/impl/kafka/rdk/MessagePSRDKafka.cpp

@@ -14,14 +14,14 @@ MessagePSRDKafka::~MessagePSRDKafka() {
   boost::mutex::scoped_lock ll(io);
 
   MRDDBG_<<" DESTROY KAFKA";
-  if(conf){
+  /*if(conf){
     rd_kafka_conf_destroy(conf);
     conf=NULL;
   }
   if(topic_conf){
     rd_kafka_topic_conf_destroy(topic_conf);
     topic_conf=NULL;
-  }
+  }*/
 
 }