Look at move place's type when suggesting mutable reborrow
Not sure why we are looking at the use site's ty instead of the move site's ty in order to suggest reborrowing the move site, but it was suppressing a perfectly valid reborrow suggestion.
r? `@estebank` who i think touched this last in 520461f1fb2730f8edb17922f3bcc74fccdc52d3, though that was quite a while ago so feel free to reassign.