message: fix remaining create_with_same_config test
diff: @@ -138,15 +138,15 @@ TYPED_TEST(Dense, CanBeConstructedFromExistingData)
  }
  -TYPED_TEST(Dense, CreateWithSameConfigDoesntKeepStride)
  +TYPED_TEST(Dense, CreateWithSameConfigKeepsStride)
  {
  auto m =
  gko::matrix::Dense<TypeParam>::create(this->exec, gko::dim<2>{2, 3}, 4);
  auto m2 = gko::matrix::Dense<TypeParam>::create_with_config_of(m.get());
  ASSERT_EQ(m2->get_size(), gko::dim<2>(2, 3));
  - EXPECT_EQ(m2->get_stride(), 3);
  - ASSERT_EQ(m2->get_num_stored_elements(), 6);
  + EXPECT_EQ(m2->get_stride(), 4);
  + ASSERT_EQ(m2->get_num_stored_elements(), 8);
  }
  