From a38d5307924b4828dc7534c0a9ec8ff96ce76031 Mon Sep 17 00:00:00 2001
From: Kamil Hornicek <kamil.hornicek@reactos.org>
Date: Mon, 20 Oct 2008 17:06:13 +0000
Subject: [PATCH] don't deref. null pointer in case NameServer key doesn't
 exist

svn path=/trunk/; revision=36849
---
 reactos/dll/win32/iphlpapi/resinfo_reactos.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/reactos/dll/win32/iphlpapi/resinfo_reactos.c b/reactos/dll/win32/iphlpapi/resinfo_reactos.c
index a9516582038..a4625efb805 100644
--- a/reactos/dll/win32/iphlpapi/resinfo_reactos.c
+++ b/reactos/dll/win32/iphlpapi/resinfo_reactos.c
@@ -229,7 +229,7 @@ PIPHLP_RES_INFO getResInfo() {
     Str = QueryRegistryValueString( hKey, L"NameServer" );
 
     /* If NameServer is empty */
-    if (*Str == L'\0')
+    if (!Str || *Str == L'\0')
     {
         /* Then use DhcpNameServer */
         Str = QueryRegistryValueString( hKey, L"DhcpNameServer" );