Also need to pad out "C-like" enum consts (paths as well as calls).

src/test/run-pass/const-enum-tuple2.rs

@@ -0,0 +1,18 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+enum E { V0, V16(u16) }
+const C: (E, u16, u16) = (V0, 0x600D, 0xBAD);
+
+fn main() {
+    let (_, n, _) = C;
+    assert n != 0xBAD;
+    assert n == 0x600D;
+}