[#1540] format checkstyle

client/src/main/java/org/apache/rocketmq/client/impl/producer/DefaultMQProducerImpl.java

@@ -34,6 +34,7 @@ import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
+
 import org.apache.rocketmq.client.QueryResult;
 import org.apache.rocketmq.client.Validators;
 import org.apache.rocketmq.client.common.ClientErrorCode;
@@ -1190,7 +1191,7 @@ public class DefaultMQProducerImpl implements MQProducerInner {
 		}
 
 		// ignore DelayTimeLevel parameter
-        if(msg.getDelayTimeLevel() != 0) {
+		if (msg.getDelayTimeLevel() != 0) {
 			MessageAccessor.clearProperty(msg, MessageConst.PROPERTY_DELAY_TIME_LEVEL);
 		}