fix user count

src/events/voice_state_update.rs

@@ -123,7 +123,7 @@ pub async fn voice_state_update(ctx: Context, old: Option<VoiceState>, new: Voic
                     let members = channel.1.members(&ctx.cache).unwrap();
                     let user_count = members.iter().filter(|member| !member.user.bot).count();
 
-                    del_flag = user_count <= 1;
+                    del_flag = user_count == 0;
                 }
             }