Fix the issue where all links on Special:Contributions where marked as stubs (NS_MAIN pages, for users with a stub threshold) broken since
r63584.
resetArticleId() is clearing the right data set by Title::newFromRow() and placing just the id, which in turn avoids to lookup the other items.
This was already done in 1.16 (since
r46179, it was useful until
r46181) but resetArticleID() did not reset everything (
r63584 change) and so
the bug wasn't present there.