fix checkstyle

Author: hfutatzhanghb

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java

@@ -540,7 +540,7 @@ protected void adjustChunkBoundary() {
       if (blockSize == getStreamer().getBytesCurBlock()) {
         psize = writePacketSize;
       } else if (blockSize - getStreamer().getBytesCurBlock() + PacketHeader.PKT_MAX_HEADER_LEN
-          < writePacketSize) { 
+          < writePacketSize) {
         psize = (int)(blockSize - getStreamer().getBytesCurBlock()) +
             PacketHeader.PKT_MAX_HEADER_LEN;
       } else {