refactor

src/main/java/me/bobert/netneutrality/scheduled/music/MusicPlayerAutoDisconnect.java

@@ -70,7 +70,7 @@ public class MusicPlayerAutoDisconnect implements ScheduledTask {
             return;
         }
 
-        Instant idleStart = idleSince.computeIfAbsent(guildId, id -> Instant.now());
+        Instant idleStart = idleSince.computeIfAbsent(guildId, _ -> Instant.now());
         long idleMinutes = Duration.between(idleStart, Instant.now()).toMinutes();
         long timeoutMinutes = getIdleTimeoutMinutes(manager);