fix test fallout

Author: durka

src/test/auxiliary/custom_derive_plugin.rs

@@ -55,6 +55,7 @@ fn expand(cx: &mut ExtCtxt,
                 generics: LifetimeBounds::empty(),
                 explicit_self: borrowed_explicit_self(),
                 args: vec![],
+                nested_match: true,
                 ret_ty: Literal(Path::new_local("isize")),
                 attributes: vec![],
                 is_unsafe: false,

src/test/auxiliary/custom_derive_plugin_attr.rs

@@ -57,6 +57,7 @@ fn expand(cx: &mut ExtCtxt,
                 generics: LifetimeBounds::empty(),
                 explicit_self: borrowed_explicit_self(),
                 args: vec![],
+                nested_match: true,
                 ret_ty: Literal(Path::new_local("isize")),
                 attributes: vec![],
                 is_unsafe: false,