fix get-song returning "no data" instead of loading the song

musicdb-lib/src/data/song.rs

@@ -112,7 +112,7 @@ impl Song {
             None
         }
     }
-    /// Gets the cached data, if available.
+    /// Gets or loads the cached data.
     /// If a thread is running to load the data, it *is* awaited.
     /// This function will block until the data is loaded.
     /// If it still returns none, some error must have occured.

musicdb-lib/src/server/get.rs

@@ -122,10 +122,8 @@ pub fn handle_one_connection_as_get(
                                 .next()
                                 .and_then(|id| id.parse().ok())
                                 .and_then(|id| {
-                                    db.lock()
-                                        .unwrap()
-                                        .get_song(&id)
-                                        .and_then(|song| song.cached_data())
+                                    let db = db.lock().unwrap();
+                                    db.get_song(&id).and_then(|song| song.cached_data_now(&db))
                                 })
                         {
                             writeln!(connection.get_mut(), "len: {}", bytes.len())?;