Fix loaded member count

src/MemberList.cpp

@@ -96,6 +96,6 @@ MemberList::fetchMore(const QModelIndex &)
 {
         auto members = cache::getMembers(room_id_.toStdString(), rowCount());
         addUsers(members);
-        numUsersLoaded_ = members.size();
+        numUsersLoaded_ += members.size();
         emit numUsersLoadedChanged();
 }

src/MemberList.h

@@ -58,5 +58,5 @@ private:
         QVector<QPair<RoomMember, QString>> m_memberList;
         QString room_id_;
         RoomInfo info_;
-        int numUsersLoaded_;
+        int numUsersLoaded_{0};
 };