A woman who broke one of her ankles after slipping in mud at the 2011 Lollapalooza music festival has no negligence claim against the concert’s promoter, a state appeals panel ruled Monday.The 1st District Appellate Court found plaintiff Magdalena Rozowicz failed to establish that C3 Presents LLC owed a duty of care to her as a concert attendee.The panel cited the muddy conditions in Grant Park on Aug. 7, 2011, and the obvious risk Rozowicz took in trying to leave the park through an unofficial exit as reasons to …