MV下载出错

[Mr-z-j]

main.rs文件中

let extension = match download_url.rfind(".") {
None => typ.as_str(),
Some(index) => &download_url[index..],
};

因mv后缀增加了密钥参数，所以mp4扩展名取错，创建文件时卷标报错

[Mr-z-j]

我把这里改了
let filename = match typ.as_str() {
"mp3" => format!("{}{}", song.file_name(&fmt), ".mp3"),
"mv" => format!("{}{}", song.file_name(&fmt), ".mp4"),
_ => unreachable!(),
};

[lonng]

@ZzzZZZ7 Can you submit a pull request to fix it?