fix crashing on exit in static SvxBrushItem dtor

site of first ctor

Change-Id: I3316e91bc54439b74df30fdf02ff264a39489c29
fix crashing on exit in static SvxBrushItem dtor

site of second ctor

Change-Id: Ic319bd36f207a0f1939482a7b4c729b519bb5ce1