Shortened a function

src/node/surface_client.js

@@ -260,9 +260,8 @@ function makeBidiStreamRequestFunction(method, serialize, deserialize) {
    * @return {EventEmitter} An event emitter for stream related events
    */
   function makeBidiStreamRequest(metadata, deadline) {
-    var stream = client.makeRequest(this.channel, method, serialize,
+    return client.makeRequest(this.channel, method, serialize,
                               deserialize, metadata, deadline);
-    return stream;
   }
   return makeBidiStreamRequest;
 }