dont use the client's colormap if it is set to None!

diff --git a/openbox/screen.c b/openbox/screen.c
index 2e6ff3f14fb8ace58ebb64d5ba8132a10f581c9a..073b565f0342e239cd469f140c4d8054c2b8d817 100644 (file)
--- a/openbox/screen.c
+++ b/openbox/screen.c
@@ -430,7 +430,8 @@ void screen_install_colormap(Client *client, gboolean install)
            XUninstallColormap(ob_display, render_colormap);
     } else {
        XWindowAttributes wa;
-       if (XGetWindowAttributes(ob_display, client->window, &wa)) {
+       if (XGetWindowAttributes(ob_display, client->window, &wa) &&
+            wa.colormap != None) {
            if (install)
                XInstallColormap(ob_display, wa.colormap);
            else