Merge pull request #13125 from jordan-woyak/mapping-tab-bar-auto-hide

DolphinQt: Auto hide the mapping window tab bar.

Source/Core/DolphinQt/Config/Mapping/MappingWindow.cpp

@@ -167,6 +167,8 @@ void MappingWindow::CreateMainLayout()
   m_tab_widget = new QTabWidget();
   m_button_box = new QDialogButtonBox(QDialogButtonBox::Close);
 
+  m_tab_widget->setTabBarAutoHide(true);
+
   m_config_layout->addWidget(m_devices_box);
   m_config_layout->addWidget(m_reset_box);
   m_config_layout->addWidget(m_profiles_box);