`Parser::getTitle` may return `null`, even though it is not allowed to
In version 1.34 creating a `Parser` object without explicitly setting the `mTitle` value was
deprecated. But as it is just a deprecation yet, there are still cases where `mTitle` can be `null`
(it seems like this is even the case when calling the proper service with
Unfortunately the `Parser::getTitle` method got changed, in a way that it _must_ return an instance
of `Title`. No `null` allowed. This leads to a `TypeError`.
I have found two Phabricator tasks, each with a proper patch for this: