Avoid leaking a QObject in ExternalWriter
Passing a nullptr as a parent is fine, passing an untracked object definitely is not.
Found by ASAN.
Same as 73d5fbbf ("Avoid leaking a QObject in ExternalExtractor").
Passing a nullptr as a parent is fine, passing an untracked object definitely is not.
Found by ASAN.
Same as 73d5fbbf ("Avoid leaking a QObject in ExternalExtractor").