fix: 修复字幕风控的报错 (#463)

crates/bili_sync/src/bilibili/video.rs

@@ -171,7 +171,8 @@ impl<'a> Video<'a> {
             .await?
             .validate()?;
         // 接口返回的信息，包含了一系列的字幕，每个字幕包含了字幕的语言和 json 下载地址
-        let subtitles_info: SubTitlesInfo = serde_json::from_value(res["data"]["subtitle"].take())?;
+        match serde_json::from_value::<Option<SubTitlesInfo>>(res["data"]["subtitle"].take())? {
+            Some(subtitles_info) => {
                 let tasks = subtitles_info
                     .subtitles
                     .into_iter()
@@ -180,6 +181,9 @@ impl<'a> Video<'a> {
                     .collect::<FuturesUnordered<_>>();
                 tasks.try_collect().await
             }
+            None => Ok(vec![]),
+        }
+    }
 
     async fn get_subtitle(&self, info: SubTitleInfo) -> Result<SubTitle> {
         let mut res = self