From cfce6511c2b56148452771a9c2f855b50a522dc0 Mon Sep 17 00:00:00 2001
From: "Xiang, Haihao" <haihao.xiang@intel.com>
Date: Thu, 20 Jun 2013 14:31:57 +0800
Subject: va_trace: avoid to dereference a NULL pointer

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
(cherry picked from commit e635bf060b68694174cbf24c6b06c573b629ddcc)
---
 va/va_trace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/va/va_trace.c b/va/va_trace.c
index 8f5991d..5c4b468 100644
--- a/va/va_trace.c
+++ b/va/va_trace.c
@@ -2674,9 +2674,10 @@ void va_TraceQueryDisplayAttributes (
     
     DPY2INDEX(dpy);
     
-    va_TraceMsg(idx, "\tnum_attributes = %d\n", *num_attributes);
     if (attr_list == NULL || num_attributes == NULL)
         return;
+
+    va_TraceMsg(idx, "\tnum_attributes = %d\n", *num_attributes);
     
     for (i=0; i<*num_attributes; i++) {
         va_TraceMsg(idx, "\tattr_list[%d] =\n");
-- 
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