Merge pull request 'now-playing: 再生情報の取得に失敗したときのエラーハンドリングを追加' (#21) from now-playing into master

Reviewed-on: #21

now-playing/main.go

@@ -48,7 +48,9 @@ func main() {
 	for {
 		playing, err := client.PlayerCurrentlyPlaying(ctx)
 		if err != nil {
-			log.Fatal(err)
+			log.Println(err)
+			time.Sleep(10 * time.Minute)
+			continue
 		}
 
 		if !playing.Playing {