IEnumConnectionPoints->Next method crashes of optional pointer to a number of fetched items in not provided

//
// crash in the next method
// The third parameter of the Next method is mandatory only if more than one connection point is requested
//
void crash5( IQTCrashPtr qtObject )
{
	IEnumConnectionPointsPtr connectionPointEnum;
	IConnectionPointContainerPtr( qtObject )->EnumConnectionPoints( &connectionPointEnum );

	IConnectionPointPtr connectionPoint;
	while( connectionPointEnum->Next( 1, &connectionPoint, 0 ) == S_OK ) // crash here. 
	{
	}
}