Fixes the same typo in 3 places.

app/src/main/java/com/keylesspalace/tusky/adapter/AccountAdapter.java

@@ -80,7 +80,7 @@ public abstract class AccountAdapter extends RecyclerView.Adapter {
         }
         int end = accountList.size();
         Account last = accountList.get(end - 1);
-        if (last != null && !findAccount(accountList, last.id)) {
+        if (last != null && !findAccount(newAccounts, last.id)) {
             accountList.addAll(newAccounts);
             notifyItemRangeInserted(end, newAccounts.size());
         }

app/src/main/java/com/keylesspalace/tusky/adapter/NotificationsAdapter.java

@@ -214,7 +214,7 @@ public class NotificationsAdapter extends RecyclerView.Adapter implements Adapte
         }
         int end = notifications.size();
         Notification last = notifications.get(end - 1);
-        if (last != null && !findNotification(notifications, last.id)) {
+        if (last != null && !findNotification(newNotifications, last.id)) {
             notifications.addAll(newNotifications);
             notifyItemRangeInserted(end, newNotifications.size());
         }

app/src/main/java/com/keylesspalace/tusky/adapter/TimelineAdapter.java

@@ -146,7 +146,7 @@ public class TimelineAdapter extends RecyclerView.Adapter implements AdapterItem
         }
         int end = statuses.size();
         Status last = statuses.get(end - 1);
-        if (last != null && !findStatus(statuses, last.id)) {
+        if (last != null && !findStatus(newStatuses, last.id)) {
             statuses.addAll(newStatuses);
             notifyItemRangeInserted(end, newStatuses.size());
         }