Fix subscription

src/usimp/subscription.rs

@@ -63,7 +63,8 @@ pub async fn push(room_id: &str, event: Event) -> Result<(), Error> {
         unsafe {
             let mut accounts = ACCOUNTS.as_ref().unwrap().lock().await;
             if let Some(acc) = accounts.get_mut(account.as_str()) {
-                rooms.append(acc);
+                let mut acc = acc.clone();
+                rooms.append(&mut acc);
             }
         }
     }