Fix pprust-expr-roundtrip

Author: Aaron1011

src/test/ui-fulldeps/pprust-expr-roundtrip.rs

@@ -84,9 +84,9 @@ fn iter_exprs(depth: usize, f: &mut dyn FnMut(P<Expr>)) {
             2 => {
                 let seg = PathSegment::from_ident(Ident::from_str("x"));
                 iter_exprs(depth - 1, &mut |e| g(ExprKind::MethodCall(
-                            seg.clone(), vec![e, make_x()])));
+                            seg.clone(), vec![e, make_x()], DUMMY_SP)));
                 iter_exprs(depth - 1, &mut |e| g(ExprKind::MethodCall(
-                            seg.clone(), vec![make_x(), e])));
+                            seg.clone(), vec![make_x(), e], DUMMY_SP)));
             },
             3..=8 => {
                 let op = Spanned {