fix unread switch

Author: martinrotter

src/librssguard/database/databasequeries.cpp

@@ -1827,7 +1827,7 @@ UpdatedArticles DatabaseQueries::updateMessages(const QSqlDatabase& db,
 
       if (cond_1 || cond_2 || cond_3 || force_update) {
         if (!feed->getParentServiceRoot()->isSyncable() &&
-            qApp->settings()->value(GROUP(Messages), SETTING(Messages::MarkUnreadOnUpdated)).toBool()) {
+            !qApp->settings()->value(GROUP(Messages), SETTING(Messages::MarkUnreadOnUpdated)).toBool()) {
           // Feed is not syncable, thus we got RSS/JSON/whatever.
           // Article is only updated, so we now prefer to keep original read state
           // pretty much the same way starred state is kept.