Client::sticker() hangs when fetching a nonexistant sticker

[nejni-marji]

example scenario:

use mpd::Client;

fn main() {
    let address = "127.0.0.1:6600";
    let mut client = Client::connect(address).unwrap();

    let song = client.currentsong().unwrap().unwrap();
    let file = &song.file;
    println!("{:?}", &song);

    let sticker = client.sticker("song", &file, "DOES NOT EXIST");
    println!("{sticker:?}");
}

expected behavior:
immediately return Err()

observed behavior:
long delay before returning Err()

additional information:
the server is running MPD v0.24, which is a recent update with protocol changes surrounding stickers. this probably has something to do with the bug

[nejni-marji]

i found the bug

nejni-marji@0804f94

i will be submitting a PR. my code fixes the bug in an obviously inappropriate way, but i also don't understand what the correct syntax is and it will probably be very obvious to you