update UT

tests/ut/ge/single_op/single_op_model_unittest.cc

@@ -241,6 +241,7 @@ TEST_F(UtestSingleOpModel, test_build_memcpy_task) {
   param.memory_size = 1024;
   auto ret = RtsKernelTaskBuilder::BuildMemcpyAsyncTask(op_desc, kernel_def, param, task);
   ASSERT_EQ(ret, SUCCESS);
+  ASSERT_EQ(task->LaunchKernel(nullptr), SUCCESS);
 
   op_desc->SetInputOffset({0, 0});
   op_desc->AddOutputDesc("y2", tensor_desc);