Fix issue #5728 - resource leak error when executing multiple contains operation of RSet in transaction

Signed-off-by: wynn5a <winminy@163.com>

redisson/src/main/java/org/redisson/transaction/BaseTransactionalSet.java

@@ -417,8 +417,8 @@ public abstract class BaseTransactionalSet<V> extends BaseTransactionalObject {
         try {
             return valueBuf.equals(oldValueBuf);
         } finally {
-            valueBuf.readableBytes();
-            oldValueBuf.readableBytes();
+            valueBuf.release();
+            oldValueBuf.release();
         }
     }
 

redisson/src/test/java/org/redisson/RedissonSetTest.java

@@ -1,23 +1,32 @@
 package org.redisson;
 
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatNoException;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ExecutionException;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 import org.redisson.RedisRunner.FailedToStartRedisException;
 import org.redisson.api.RFuture;
 import org.redisson.api.RList;
 import org.redisson.api.RSet;
+import org.redisson.api.RTransaction;
 import org.redisson.api.SortOrder;
+import org.redisson.api.TransactionOptions;
 import org.redisson.client.codec.IntegerCodec;
 import org.redisson.client.codec.StringCodec;
 
-import java.io.Serializable;
-import java.util.*;
-import java.util.concurrent.ExecutionException;
-import java.util.stream.Collectors;
-import java.util.stream.IntStream;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
 public class RedissonSetTest extends RedisDockerTest {
 
     public static class SimpleBean implements Serializable {
@@ -890,4 +899,22 @@ public class RedissonSetTest extends RedisDockerTest {
         assertThat(strings).containsAll(stringsOne);
         assertThat(strings).hasSize(stringsOne.size());
     }
+
+    @Test
+    public void testAddAndContainsInTransactionShouldNotShowResourceLeak() {
+        int arbitraryElementsCount = 1000;
+
+        RTransaction tx = redisson.createTransaction(TransactionOptions.defaults());
+        RSet<Integer> testSet = tx.getSet("testSet");
+        // Should check the log when we run this test and see if there is any resource leak error
+        assertThatNoException().isThrownBy(()->{
+            for (int index = 0; index < arbitraryElementsCount; index++) {
+                testSet.add(index);
+                if (testSet.contains(index)) {
+                    System.out.println("Element " + index + " is in the set");
+                }
+            }
+        });
+        tx.commit();
+    }
 }