Update ui tests

src/test/ui/macros/macro-in-expression-context-2.rs

@@ -3,6 +3,6 @@ macro_rules! empty { () => () }
 fn main() {
     match 42 {
         _ => { empty!() }
-//~^ ERROR expected expression, found `<eof>`
+//~^ ERROR macro expansion ends with an incomplete expression
     };
 }