fix bug: kafka get row data for performance

kafka/src/main/java/com/alibaba/otter/canal/kafka/producer/CanalKafkaStarter.java

@@ -121,7 +121,7 @@ public class CanalKafkaStarter {
                     Message message = server.getWithoutAck(clientIdentity, kafkaProperties.getCanalBatchSize()); // 获取指定数量的数据
                     long batchId = message.getId();
                     try {
-                        int size = message.getEntries().size();
+                        int size = message.isRaw() ?  message.getRawEntries().size() : message.getEntries().size();
                         if (batchId != -1 && size != 0) {
                             if (!StringUtils.isEmpty(destination.getTopic())) {
                                 Topic topic = new Topic();