Fix coding style in QLabel example code

Change-Id: I13838c1759b14089ba9f4daf442048fb5c8da738
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
QCocoaFileDialogHelper: Cache directory until delegate has been created

Task-number: QTBUG-34393

Change-Id: Idee9e879e586afe25fd099d157ed7af88c17c4a3
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>