Fix for "Buffered next year is wrong" from observation reported by jacekn on https://bugs.launchpad.net/ubuntu-calendar-app/+bug/1222846
"If I do it slowly and move it just enough to see the year it is initially showing previous year. Then when I scroll a bit more then is short lock up and year is update to what it should be.".
Approved by Olivier Tilloy, Ubuntu Phone Apps Jenkins Bot.