Qt: fix some warnings

rpcs3/rpcs3qt/config_checker.cpp

@@ -136,6 +136,7 @@ bool config_checker::check_config(QString content, QString& result, bool is_log)
 		case cfg::type::_enum:
 		case cfg::type::_int:
 		case cfg::type::uint:
+		case cfg::type::uint128:
 		case cfg::type::string:
 		{
 			const std::string val = base->to_string();

rpcs3/rpcs3qt/gs_frame.cpp

@@ -336,6 +336,7 @@ void gs_frame::handle_shortcut(gui::shortcuts::shortcut shortcut_key, const QKey
 		case gui::shortcuts::shortcut::gw_savestate_2: index = 2; break;
 		case gui::shortcuts::shortcut::gw_savestate_3: index = 3; break;
 		case gui::shortcuts::shortcut::gw_savestate_4: index = 4; break;
+		default: break; // unreachable
 		}
 
 		boot_current_game_savestate(false, index);

rpcs3/rpcs3qt/infinity_dialog.cpp

@@ -439,7 +439,7 @@ figure_creator_dialog::figure_creator_dialog(QWidget* parent, u8 slot)
 	QComboBox* combo_figlist = new QComboBox();
 
 	// Lambda to populate the combo box based on series filter
-	auto populate_combo = [=](int series_filter) -> u32
+	auto populate_combo = [=, this](int series_filter) -> u32
 	{
 		combo_figlist->clear();
 		QStringList filterlist;