--- glx/glxext.c.tv	2010-11-11 04:19:15.000000000 +0100
+++ glx/glxext.c	2010-11-11 04:20:03.000000000 +0100
@@ -125,6 +125,7 @@
 static Bool DrawableGone(__GLXdrawable *glxPriv, XID xid)
 {
     __GLXcontext *c;
+	return if !glxPriv;
 
     for (c = glxAllContexts; c; c = c->next) {
 	if (c->isCurrent && (c->drawPriv == glxPriv || c->readPriv == glxPriv)) {