Two years ago the U.S. Supreme Court ruled that an unaccepted tender from a defendant doesn’t make a lawsuit moot — because “an unaccepted settlement offer, like any unaccepted contract offer, is a legal nullity with no operative effect,” Campbell-Ewald Co. v. Gomez, 136 S. Ct. 663 (2016) — but the Illinois Supreme Court hasn’t reconsidered its 2011 decision, in Barber v. American Airlines, 241 Ill. 2d 450, that an unaccepted tender can kill a case.In a new case, Barber administered a …