rem: &(wwin->cmap_window_no))!=Success
add: &(wwin->cmap_window_no))==0
context: GetColormapWindows(WWindow *wwin){    if (wwin->cmap_windows) {	XFree(wwin->cmap_windows);    }    wwin->cmap_windows = NULL;    wwin->cmap_window_no = 0;    if (XGetWMColormapWindows(dpy, wwin->client_win, &(wwin->cmap_windows),			      &(wwin->cmap_window_no))!=Success	|| !wwin->cmap_windows) {	wwin->cmap_window_no = 0;	wwin->cmap_windows = NULL;    }}