<em>'Just My Luck'</em> runs a little thin, but it narrowly did enough for me to enjoy it. Lindsay Lohan and Chris Pine don't, in my opinion, share as much onscreen chemistry as is generally needed for a romcom, though they are both likeable and produce solid enough performances that I was happy to watch them act throughout. It's amusing seeing McFly - a very good band, back then at least - billed as…