From swhite@corefiling.com Wed Jul 21 00:00:00 2010
From: Stephen White <swhite@corefiling.com>
Date: Wed, 21 Jul 2010 00:00:00 +1000
Subject: Patch to fix Xvfb crash

diff -Naur xorg-server-1.7.6.orig/mi/midispcur.c xorg-server-1.7.6/mi/midispcur.c
--- xorg-server-1.7.6.orig/mi/midispcur.c	2009-11-30 05:19:49.000000000 +0000
+++ xorg-server-1.7.6/mi/midispcur.c	2010-07-21 17:08:37.641598048 +0100
@@ -573,6 +573,8 @@
     pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
 						  miDCScreenKey);
     pBuffer = MIDCBUFFER(pDev);
+    if (!pBuffer)
+        return FALSE;
     pSave = pBuffer->pSave;
 
     pWin = WindowTable[pScreen->myNum];