From ab11bad54707941eb41be62c025b983760ce3900 Mon Sep 17 00:00:00 2001
From: Dodji Seketeli <dodji@openedhand.com>
Date: Thu, 4 Oct 2007 13:05:29 +0200
Subject: [PATCH] Xephyr: remove a potential crasher

	* hw/kdrive/ephyr/hostx.c:
	  (hostx_has_dri): be more defensive.
---
 hw/kdrive/ephyr/hostx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/kdrive/ephyr/hostx.c b/hw/kdrive/ephyr/hostx.c
index 181edd226..b5ffdd075 100644
--- a/hw/kdrive/ephyr/hostx.c
+++ b/hw/kdrive/ephyr/hostx.c
@@ -1328,6 +1328,9 @@ hostx_has_dri (void)
     int event_base=0, error_base=0 ;
     Display *dpy=hostx_get_display () ;
 
+    if (!dpy)
+        return FALSE ;
+
     if (!XF86DRIQueryExtension (dpy,
                                 &event_base,
                                 &error_base)) {