kconfig: qconf: overload addToolBar() to create and insert toolbar

Use the overloaded function, addToolBar(const QString &title)
to create a QToolBar object, setting its window title, and inserts
it into the toolbar area.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/kconfig/qconf.cc

@@ -1432,9 +1432,6 @@ ConfigMainWindow::ConfigMainWindow(void)
 	setTabOrder(configList, helpText);
 	configList->setFocus();
 
-	QToolBar *toolBar = new QToolBar("Tools", this);
-	addToolBar(toolBar);
-
 	backAction = new QAction(QPixmap(xpm_back), "Back", this);
 	connect(backAction, SIGNAL(triggered(bool)), SLOT(goBack()));
 
@@ -1507,6 +1504,7 @@ ConfigMainWindow::ConfigMainWindow(void)
 	  connect(showAboutAction, SIGNAL(triggered(bool)), SLOT(showAbout()));
 
 	// init tool bar
+	QToolBar *toolBar = addToolBar("Tools");
 	toolBar->addAction(backAction);
 	toolBar->addSeparator();
 	toolBar->addAction(loadAction);