Resolve "Add an option to send gNMI Subscribe requests via SBI"

Description

#227 (closed)

controller/nucleus/gnmi_transport.go

@@ -368,9 +368,9 @@ func (g *Gnmi) subscribeInternal(ctx context.Context, subcribeCallbackFunc func(
 				if err := subscriptionInfo.StopContext.Err(); err != nil {
 					log.Error(err)
 				}
-				defer close(g.RespChan)
 				log.Infof("StopContext for Device: %s was called and Subscription closed.", subscriptionInfo.DeviceName)
 				return
+			default:
 			}
 		}
 	}()