Fix CreateTopicWithDifferentTypeName_negative flaky test (#5307)

Signed-off-by: Ricardo González Moreno <[email protected]>

Author: richiware

test/unittest/dds/participant/ParticipantTests.cpp

@@ -2282,6 +2282,7 @@ TEST(ParticipantTests, CreateTopicWithDifferentTypeName_negative)
         // Topic using the default profile
         Topic* topic = participant->create_topic("footopic", type_name, TOPIC_QOS_DEFAULT);
         ASSERT_EQ(topic, nullptr);
+        ASSERT_TRUE(DomainParticipantFactory::get_instance()->delete_participant(participant) == RETCODE_OK);
     }
 
     // Using type support type name when registered with other name
@@ -2296,6 +2297,7 @@ TEST(ParticipantTests, CreateTopicWithDifferentTypeName_negative)
         // Topic using the default profile
         Topic* topic = participant->create_topic("footopic", type.get_type_name(), TOPIC_QOS_DEFAULT);
         ASSERT_EQ(topic, nullptr);
+        ASSERT_TRUE(DomainParticipantFactory::get_instance()->delete_participant(participant) == RETCODE_OK);
     }
 }