From swhite@corefiling.com Wed Feb 14 00:00:00 2011
From: Stephen White <swhite@corefiling.com>
Date: Mon, 14 Feb 2011 00:00:00 +1000
Subject: Patch to fix Xvfb crash

diff -Naur xorg-server-1.9.0.orig/mi/midispcur.c xorg-server-1.9.0/mi/midispcur.c
--- xorg-server-1.9.0.orig/mi/midispcur.c.orig	2010-06-06 18:53:51.000000000 +0100
+++ xorg-server-1.9.0.orig/mi/midispcur.c	2011-02-14 16:14:51.224629877 +0000
@@ -491,6 +491,8 @@
     pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
 						  miDCScreenKey);
     pBuffer = miGetDCDevice(pDev, pScreen);
+    if (!pBuffer)
+  return FALSE;
     pSave = pBuffer->pSave;
 
     pWin = pScreen->root;