always draw border on terrain if there is only a map mask and no map image. this is a workaround for the fact that space campaign masks use white (lfObject) color instead of black (lfBasic)

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    return a.exec();
}