Fix a crash in main settings destructor.

Fixes #27544.

Telegram/SourceFiles/info/profile/info_profile_emoji_status_panel.cpp

@@ -159,6 +159,10 @@ void EmojiStatusPanel::show(Descriptor &&descriptor) {
 	_panel->toggleAnimated();
 }
 
+bool EmojiStatusPanel::hasFocus() const {
+	return _panel && Ui::InFocusChain(_panel.get());
+}
+
 void EmojiStatusPanel::repaint() {
 	_panel->selector()->update();
 }

Telegram/SourceFiles/info/profile/info_profile_emoji_status_panel.h

@@ -46,6 +46,7 @@ public:
 		not_null<Window::SessionController*> controller,
 		not_null<QWidget*> button,
 		Data::CustomEmojiSizeTag animationSizeTag = {});
+	[[nodiscard]] bool hasFocus() const;
 
 	struct Descriptor {
 		not_null<Window::SessionController*> controller;

Telegram/SourceFiles/settings/settings_main.cpp

@@ -174,7 +174,16 @@ Cover::Cover(
 	}, _name->lifetime());
 }
 
-Cover::~Cover() = default;
+Cover::~Cover() {
+	if (_emojiStatusPanel.hasFocus()) {
+		// Panel will try to return focus to the layer widget, the problem is
+		// we are destroying the layer widget probably right now and focusing
+		// it will lead to a crash, because it destroys its children (how we
+		// got here) after it clears focus out of itself. So if you return
+		// the focus inside a child destructor, it won't be cleared at all.
+		window()->setFocus();
+	}
+}
 
 void Cover::setupChildGeometry() {
 	using namespace rpl::mappers;