Package gfit: Return immediately when no activities are set.

diff --git a/gfit/gfit.go b/gfit/gfit.go
index fb66862..d1aacb6 100644 (file)
--- a/gfit/gfit.go
+++ b/gfit/gfit.go
@@ -230,6 +230,10 @@ func (a Activity) String() string {
 }
 
 func (c *Client) SetActivities(ctx context.Context, activities []Activity, startOfDay time.Time) error {
+       if len(activities) == 0 {
+               return nil
+       }
+
        dataStreamID := DataStreamID(&fitness.DataSource{
                DataType: &fitness.DataType{
                        Name: dataTypeNameActivitySegment,