Merge pull request c9s#1521 from michaljirman/bugfix-telegram-no-open…

…ed-positions-error

FIX: [telegram] prevent sending error to telegram for the case of no opened position

pkg/bbgo/interact.go

@@ -147,7 +147,7 @@ func (it *CoreInteraction) Commands(i *interact.Interact) {
 		position := reader.CurrentPosition()
 		if position == nil || position.Base.IsZero() {
 			reply.Message(fmt.Sprintf("Strategy %q has no opened position", signature))
-			return fmt.Errorf("strategy %T has no opened position", strategy)
+			return nil
 		}
 
 		reply.Send("Your current position:")