Ios: Do not pollute the global/Qt namespace with widgets

Change-Id: Iccaaff6bff386b8d2513ca79daa581d29b3c6fb2
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/ios/iossettingswidget.cpp

@@ -50,7 +50,7 @@ namespace Internal {
 
 IosSettingsWidget::IosSettingsWidget(QWidget *parent)
     : QWidget(parent),
-      m_ui(new Ui_IosSettingsWidget),
+      m_ui(new Ui::IosSettingsWidget),
       m_saveSettingsRequested(false)
 {
     initGui();