decoder/loadFloat: No need to explicitly cast v to interface{}

v is concrete type here (float64) and Go automatically converts it to
interface{} on call to Decoder.push().

ogorek.go

@@ -391,7 +391,7 @@ func (d *Decoder) loadFloat() error {
 	if err != nil {
 		return err
 	}
-	d.push(interface{}(v))
+	d.push(v)
 	return nil
 }