Function lockGameDisplays

src/library/checkpoint/SaveStateManager.cpp:96–102

#ifdef __unix__
static void lockGameDisplays()
{
    for (int i=0; i<GAMEDISPLAYNUM; i++) {
        if (x11::gameDisplays[i])
            XLockDisplay(x11::gameDisplays[i]);
    }
}

static void syncGameDisplays()
{