coreapi pubsub: fix review nits

License: MIT
Signed-off-by: Łukasz Magiera <magik6k@gmail.com>

core/commands/pubsub.go

@@ -88,6 +88,9 @@ This command outputs data in the following encodings:
 		discover, _ := req.Options[pubsubDiscoverOptionName].(bool)
 
 		sub, err := api.PubSub().Subscribe(req.Context, topic, options.PubSub.Discover(discover))
+		if err != nil {
+			return err
+		}
 		defer sub.Close()
 
 		if f, ok := res.(http.Flusher); ok {

core/coreapi/interface/pubsub.go

@@ -38,7 +38,6 @@ type PubSubAPI interface {
 	Ls(context.Context) ([]string, error)
 
 	// Peers list peers we are currently pubsubbing with
-	// TODO: WithTopic
 	Peers(context.Context, ...options.PubSubPeersOption) ([]peer.ID, error)
 
 	// Publish a message to a given pubsub topic