added soem safeyt chceks when restoring list view state

src/librssguard/definitions/definitions.h

@@ -125,7 +125,6 @@
 #define LOGSEC_DB                   "database: "
 #define LOGSEC_NEXTCLOUD            "nextcloud: "
 #define LOGSEC_GREADER              "greader: "
-#define LOGSEC_INOREADER            "inoreader: "
 #define LOGSEC_FEEDLY               "feedly: "
 #define LOGSEC_TTRSS                "tt-rss: "
 #define LOGSEC_GMAIL                "gmail: "

src/librssguard/gui/messagesview.cpp

@@ -78,6 +78,12 @@ void MessagesView::restoreHeaderState(const QByteArray& data) {
   inn.setVersion(QDataStream::Version::Qt_4_7);
 
   int saved_header_count; inn >> saved_header_count;
+
+  if (std::abs(saved_header_count - header()->count()) > 10) {
+    qWarningNN << LOGSEC_GUI << "Detected invalid state for list view.";
+    return;
+  }
+
   Qt::SortOrder saved_sort_order; inn >> saved_sort_order;
   int saved_sort_column; inn >> saved_sort_column;