Fix existing syntactics nits.

components/devtools/actor.rs

@@ -86,8 +86,8 @@ impl Actor + Send {
 
 /// A list of known, owned actors.
 pub struct ActorRegistry {
-    actors: HashMap<String, Box<Actor+Send>>,
-    new_actors: RefCell<Vec<Box<Actor+Send>>>,
+    actors: HashMap<String, Box<Actor + Send>>,
+    new_actors: RefCell<Vec<Box<Actor + Send>>>,
     old_actors: RefCell<Vec<String>>,
     script_actors: RefCell<HashMap<String, String>>,
     shareable: Option<Arc<Mutex<ActorRegistry>>>,
@@ -167,11 +167,11 @@ impl ActorRegistry {
     }
 
     /// Add an actor to the registry of known actors that can receive messages.
-    pub fn register(&mut self, actor: Box<Actor+Send>) {
+    pub fn register(&mut self, actor: Box<Actor + Send>) {
         self.actors.insert(actor.name().to_string(), actor);
     }
 
-    pub fn register_later(&self, actor: Box<Actor+Send>) {
+    pub fn register_later(&self, actor: Box<Actor + Send>) {
         let mut actors = self.new_actors.borrow_mut();
         actors.push(actor);
     }

components/devtools/actors/inspector.rs

@@ -93,7 +93,7 @@ impl Actor for HighlighterActor {
 }
 
 #[derive(RustcEncodable)]
-struct ModifyAttributeReply{
+struct ModifyAttributeReply {
     from: String,
 }
 
@@ -119,7 +119,7 @@ impl Actor for NodeActor {
                                                       registry.actor_to_script(target.to_string()),
                                                       modifications))
                                 .unwrap();
-                let reply = ModifyAttributeReply{
+                let reply = ModifyAttributeReply {
                     from: self.name(),
                 };
                 stream.write_json_packet(&reply);