Error in QMetaType "MyClass" custom type allocation and destruction example

In the following snippet from the example in the detailed description of QMetaType:

int id = QMetaType::type("MyClass");
if (id == 0) {
...

The if condition is wrong. According to QMetaType documentation, type() returns 0 if the type is not registered, so the condition should be (id != 0), so the program tries to do something only when the type exists.