Felix S. Klock II 91493df752 Work around unary negation to-be-feature-gated warning by
replacing references to `-1` as a `ast::NodeId` with `ast::DUMMY_NODE_ID`,
which seems like a better notation to use (it is currently also `-1`.

(AFAICT the code is not *relying* on the value `-1` anywhere, it
really just needed a dummy value for when the input is `None`.)
2015-07-21 18:12:06 +02:00
..