Full upgradable variants preview.

Telegram/SourceFiles/data/data_document_media.cpp

@@ -431,7 +431,7 @@ void DocumentMedia::GenerateGoodThumbnail(
 		document->setGoodThumbnailChecked(false);
 		return;
 	}
-	const auto guard = base::make_weak(&document->owner().session());
+	const auto guard = base::make_weak(&document->session());
 	crl::async([=, location = std::move(location)] {
 		const auto filepath = (location && location->accessEnable())
 			? location->name()

Telegram/SourceFiles/data/data_star_gift.h

@@ -20,14 +20,26 @@ namespace Data {
 struct UniqueGiftAttribute {
 	QString name;
 	int rarityPermille = 0;
+
+	friend inline bool operator==(
+		const UniqueGiftAttribute &,
+		const UniqueGiftAttribute &) = default;
 };
 
 struct UniqueGiftModel : UniqueGiftAttribute {
 	not_null<DocumentData*> document;
+
+	friend inline bool operator==(
+		const UniqueGiftModel &,
+		const UniqueGiftModel &) = default;
 };
 
 struct UniqueGiftPattern : UniqueGiftAttribute {
 	not_null<DocumentData*> document;
+
+	friend inline bool operator==(
+		const UniqueGiftPattern &,
+		const UniqueGiftPattern &) = default;
 };
 
 struct UniqueGiftBackdrop : UniqueGiftAttribute {
@@ -36,6 +48,10 @@ struct UniqueGiftBackdrop : UniqueGiftAttribute {
 	QColor patternColor;
 	QColor textColor;
 	int id = 0;
+
+	friend inline bool operator==(
+		const UniqueGiftBackdrop &,
+		const UniqueGiftBackdrop &) = default;
 };
 
 struct UniqueGiftAttributes {

Telegram/SourceFiles/data/data_story.cpp

@@ -727,7 +727,7 @@ void Story::applyFields(
 	auto caption = TextWithEntities{
 		data.vcaption().value_or_empty(),
 		Api::EntitiesFromMTP(
-			&owner().session(),
+			&session(),
 			data.ventities().value_or_empty()),
 	};
 	if (const auto user = _peer->asUser()) {