Fix issue with array initialization (#3123)

Author: tishun

src/main/java/io/lettuce/core/output/KeyValueListOutput.java

@@ -74,7 +74,7 @@ public void set(ByteBuffer bytes) {
     public void multi(int count) {
 
         if (!initialized) {
-            output = OutputFactory.newList(keys == null ? count / 2 : count);
+            output = OutputFactory.newList(count);
             initialized = true;
         }
     }

src/test/java/io/lettuce/core/commands/HashCommandIntegrationTests.java

@@ -41,6 +41,7 @@
 import javax.inject.Inject;
 import java.time.Duration;
 import java.time.Instant;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.Date;
 import java.util.HashSet;
@@ -265,6 +266,19 @@ void hrandfield() {
                 KeyValue.fromNullable("two", "2"), KeyValue.fromNullable("three", "3"));
     }
 
+    @Test
+    @EnabledOnCommand("HRANDFIELD")
+    void hrandfieldIssue3122() {
+
+        Map<String, String> hash = new LinkedHashMap<>();
+        hash.put("one", "1");
+        hash.put("two", "2");
+
+        redis.hset(key, hash);
+        assertThat(redis.hrandfieldWithvalues(key)).isIn(KeyValue.fromNullable("one", "1"), KeyValue.fromNullable("two", "2"),
+                KeyValue.fromNullable("three", "3"));
+    }
+
     @Test
     void hset() {
         assertThat(redis.hset(key, "one", "1")).isTrue();