Help Search: Fix re-index button

The re-index button was connected to the wrong help search engine.

Change-Id: I945853886a8cb0462eef71d22c48a1ac92c1eec1
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/plugins/help/searchwidget.cpp

@@ -97,6 +97,12 @@ void SearchWidget::resetZoom()
     }
 }
 
+void SearchWidget::reindexDocumentation()
+{
+    if (searchEngine)
+        searchEngine->reindexDocumentation();
+}
+
 void SearchWidget::showEvent(QShowEvent *event)
 {
     if (!event->spontaneous() && !searchEngine) {
@@ -285,6 +291,6 @@ QList<QToolButton *> SearchSideBarItem::createToolBarWidgets()
     reindexButton->setIcon(QIcon(QLatin1String(Core::Constants::ICON_RELOAD_GRAY)));
     reindexButton->setToolTip(tr("Regenerate Index"));
     connect(reindexButton, SIGNAL(clicked()),
-            LocalHelpManager::helpEngine().searchEngine(), SLOT(reindexDocumentation()));
+            widget(), SLOT(reindexDocumentation()));
     return QList<QToolButton *>() << reindexButton;
 }

src/plugins/help/searchwidget.h

@@ -72,6 +72,10 @@ public:
     void zoomOut();
     void resetZoom();
 
+
+public slots:
+    void reindexDocumentation();
+
 signals:
     void linkActivated(const QUrl &link, bool newPage);