fix test imports

ethcore/light/src/on_demand/mod.rs

@@ -504,8 +504,7 @@ impl Handler for OnDemand {
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use on_demand::request;
-	use net::{BasicContext, ReqId, Error as LesError};
+	use net::{Announcement, BasicContext, ReqId, Error as LesError};
 	use request::{Request as LesRequest, Kind as LesRequestKind};
 	use network::{PeerId, NodeId};
 	use futures::Future;

ethcore/light/src/on_demand/request.rs

@@ -289,6 +289,8 @@ mod tests {
 
 	#[test]
 	fn check_state_proof() {
+		use rlp::{RlpStream, Stream};
+
 		let mut root = H256::default();
 		let mut db = MemoryDB::new();
 		let mut header = Header::new();