[feat-35406][http] close http connection after send data

Author: simenliuxing

http/http-sink/src/main/java/com/dtstack/flink/sql/sink/http/HttpOutputFormat.java

@@ -118,7 +118,7 @@ public void writeRecord(Tuple2 record) {
             outDirtyRecords.inc();
         } finally {
             sendMessage.clear();
-            if (client == null) {
+            if (client != null) {
                 try {
                     client.close();
                 } catch (IOException e) {