[Fix] Fixed crash with "don't quit upon last tab" option

- when closing last tab with image, QWebView::setUrl() was
  for some reason crashing

plugins/TestPlugin/testplugin.cpp

@@ -5,8 +5,6 @@ void TestPlugin::init(QString sPath)
     settingsPath = sPath;
     //This function is called right after plugin is loaded
     qDebug() << __FUNCTION__ << "called";
-
-    qDebug() << HistoryModel::titleCaseLocalizedMonth(4);
 }
 
 bool TestPlugin::testPlugin()

src/webview/tabwidget.cpp

@@ -364,7 +364,7 @@ void TabWidget::closeTab(int index)
 
     if (count() == 1) {
         if (m_dontQuitWithOneTab) {
-            webView->setUrl(m_urlOnNewTab);
+            webView->load(m_urlOnNewTab);
             return;
         }
         else {