Fix Mac build

Author: NathanW2

src/app/qgscustomization.cpp

@@ -37,7 +37,7 @@
 #include <QMetaObject>
 
 #ifdef Q_OS_MACX
-QgsCustomizationDialog::QgsCustomizationDialog( QWidget *parent, QSettings settings )
+QgsCustomizationDialog::QgsCustomizationDialog( QWidget *parent, QSettings* settings )
     : QMainWindow( parent, Qt::WindowSystemMenuHint )  // Modeless dialog with close button only
 #else
 QgsCustomizationDialog::QgsCustomizationDialog( QWidget *parent, QSettings* settings )