rem: h = ((usableArea.y2-Y_ORIGIN(scr)) - height - extra_height);
add: h = ((usableArea.y2-Y_ORIGIN(scr)) - height);
context: randomPlaceWindow(WScreen *scr, WWindow *wwin, int *x_ret, int *y_ret,		  unsigned int width, unsigned int height,		  WArea usableArea){    int w, h, extra_height;        if (wwin->frame)	extra_height = wwin->frame->top_width + wwin->frame->bottom_width + 2;    else	extra_height = 24; /* random value */        w = ((usableArea.x2-X_ORIGIN(scr)) - width);    h = ((usableArea.y2-Y_ORIGIN(scr)) - height - extra_height);    if (w<1) w = 1;    if (h<1) h = 1;    *x_ret = X_ORIGIN(scr) + rand()%w;    *y_ret = Y_ORIGIN(scr) + rand()%h;}