fix

Author: Caideyipi

integration-test/src/test/java/org/apache/iotdb/pipe/it/single/IoTDBPipeOPCUAIT.java

@@ -85,6 +85,7 @@ public void setUp() {
   @Test
   public void testOPCUAServerSink() throws Exception {
     int tcpPort = -1;
+    int httpsPort = -1;
     try (final SyncConfigNodeIServiceClient client =
         (SyncConfigNodeIServiceClient) env.getLeaderConfigNodeConnection()) {