Lambda in UniqueIDBDatabaseConnection::abortTransactionWithoutCallbac…

…k should check weakThis before using this

https://bugs.webkit.org/show_bug.cgi?id=241557

Reviewed by Youenn Fablet.

* Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.cpp:
(WebCore::IDBServer::UniqueIDBDatabaseConnection::abortTransactionWithoutCallback):

Canonical link: https://commits.webkit.org/251506@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@295501 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.cpp

@@ -79,7 +79,9 @@ void UniqueIDBDatabaseConnection::abortTransactionWithoutCallback(UniqueIDBDatab
     ASSERT(m_database);
 
     const auto& transactionIdentifier = transaction.info().identifier();
-    m_database->abortTransaction(transaction, [this, transactionIdentifier](const IDBError&) {
+    m_database->abortTransaction(transaction, [this, weakThis = WeakPtr { *this }, transactionIdentifier](const IDBError&) {
+        if (!weakThis)
+            return;
         ASSERT(m_transactionMap.contains(transactionIdentifier));
         m_transactionMap.remove(transactionIdentifier);
     });