it wont hurt a darn thing ! take it for a long ride when you get it out in the spring.. take your other propper winterizing steps on the bike and dont loose a minutes sleep.
If i had a nickle for every piece of bad advice, bike maintence rumor, or just simple untruth told to me about motorcycles and the upkeep.. well id have a few bucks.. Im walking talking proof, change your oil in the spring, change your oil in the fall.. it makes zero difference, as long as your changing your oil your fine. Ive had multiple motors tore down and ive done it all.. (changed oil at odd times, when it wasnt needed etc) and the guts always look the same.. The most important oil related shared sump bike advice i could pass along is when it gets feeling notchy on your left toe.. change it, if its not notchy and its getting up there in miliage, change it.. simple sorry for the rant.