add the timeout for writer->wait_discovery().

Signed-off-by: Tomoya Fujita <[email protected]>

test/blackbox/common/DDSBlackboxTestsStatistics.cpp

@@ -762,7 +762,7 @@ TEST(DDSStatistics, correct_deletion_upon_delete_contained_entities)
                 {
                     writer->init();
                     ASSERT_TRUE(writer->isInitialized());
-                    writer->wait_discovery();
+                    writer->wait_discovery(std::chrono::seconds(3));
                     writer->send(*data, 10);
                     writer->destroy();
                 }));