A missing update of a "last" variable meant the loop inevitably did
nothing useful. Include type-annotation for last, while doing this.
Thankfully the check still doesn't find any duplications, now that
I've fixed it so that actually would, were any present.
Pick-to: 6.5
Change-Id: I672e6570359a3ff102a364d8af98c5c8c0bdc4d9
Reviewed-by: Mate Barany <mate.barany@qt.io>
(cherry picked from commit 98db7a35d2ee56f5da11b4a8e745f2ee6a965077)
d4989135f9