VCSBaseEditorParameterWidget::mapSetting cope with 0 pointer

Change-Id: I797488c6ace58a6f927fe3d528131682f1832de1
Reviewed-on: http://codereview.qt-project.org/6235


Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/plugins/vcsbase/vcsbaseeditorparameterwidget.cpp

@@ -195,7 +195,7 @@ void VCSBaseEditorParameterWidget::mapSetting(QComboBox *comboBox, QString *sett
         d->m_settingMapping.insert(comboBox, Internal::SettingMappingData(setting));
         if (setting) {
             comboBox->blockSignals(true);
-            const int itemIndex = comboBox->findData(*setting);
+            const int itemIndex = setting ? comboBox->findData(*setting) : -1;
             if (itemIndex != -1)
                 comboBox->setCurrentIndex(itemIndex);
             comboBox->blockSignals(false);