Fix build with GCC.

Telegram/SourceFiles/settings/sections/settings_advanced.cpp

@@ -349,7 +349,6 @@ void BuildWindowTitleSection(SectionBuilder &builder) {
 
 void BuildSystemIntegrationSection(SectionBuilder &builder) {
 	const auto controller = builder.controller();
-	const auto container = builder.container();
 	const auto settings = &Core::App().settings();
 
 	builder.addDivider();
@@ -504,6 +503,7 @@ void BuildSystemIntegrationSection(SectionBuilder &builder) {
 #elif defined Q_OS_WIN // Q_OS_MAC
 	using Behavior = Core::Settings::CloseBehavior;
 
+	const auto container = builder.container();
 	const auto closeToTaskbarShown = container
 		? container->lifetime().make_state<rpl::variable<bool>>(
 			!Core::App().tray().has())

Telegram/SourceFiles/settings/sections/settings_chat.cpp

@@ -1383,15 +1383,6 @@ void SetupStickersEmoji(
 			checked,
 			st::settingsCheckbox);
 	};
-	const auto add = [&](const QString &label, bool checked, auto &&handle) {
-		return inner->add(
-			checkbox(label, checked),
-			st::settingsCheckboxPadding
-		)->checkedChanges(
-		) | rpl::on_next(
-			std::move(handle),
-			inner->lifetime());
-	};
 	const auto addWithReturn = [&](
 			const QString &label,
 			bool checked,

Telegram/SourceFiles/settings/sections/settings_premium.cpp

@@ -1266,7 +1266,6 @@ void BuildPremiumSectionContent(
 		SectionBuilder &builder,
 		std::shared_ptr<PremiumState> state) {
 	const auto controller = builder.controller();
-	const auto session = builder.session();
 
 	if (controller && state) {
 		builder.add([controller, state](const WidgetContext &ctx) {