I have read in at least three different repair books that super glue melts into nitro and becomes part of the finish. This is not first hand experience, since I would not use lacquer for any reason. (If you want to know why, just google Chris Derrig, who died at about age 32.). I believe the only cosmetic repair possible is to sand the super glue down flush and polish it back up. Acetone is definitely out of the question, since it will melt the finish. Don't try scraping, since the glue has become part of the finish and you may lift chips off the guitar. You can either ignore it (and resolve to mask your finish off in the future next time you are using anything like cyano in the future), or take it to a luthier who will carefully sand the glue bumps down to finish level and polish it back up. Bear in mind that even in the hands of a pro this may leave a visible repair (either a spot that is shinier or duller than the rest of the finish).