Fix possible issue with queueing

src/qtlibtorrent/qbtsession.cpp

@@ -2224,7 +2224,7 @@ void QBtSession::readAlerts() {
     else if (file_error_alert* p = dynamic_cast<file_error_alert*>(a.get())) {
       QTorrentHandle h(p->handle);
       if(h.is_valid()) {
-        h.auto_managed(false);
+        h.pause();
         std::cerr << "File Error: " << p->message().c_str() << std::endl;
         addConsoleMessage(tr("An I/O error occured, '%1' paused.").arg(h.name()));
         addConsoleMessage(tr("Reason: %1").arg(misc::toQString(p->message())));