[khornicek] 36849: don't deref. null pointer in case NameServer key doesn't exist

Author: khornicek
Date: Mon Oct 20 12:06:13 2008
New Revision: 36849
URL: http://svn.reactos.org/svn/reactos?rev=36849&view=rev
Log:
don't deref. null pointer in case NameServer key doesn't exist
Modified:
    trunk/reactos/dll/win32/iphlpapi/resinfo_reactos.c
Modified: trunk/reactos/dll/win32/iphlpapi/resinfo_reactos.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/iphlpapi/resinfo…
==============================================================================
--- trunk/reactos/dll/win32/iphlpapi/resinfo_reactos.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/iphlpapi/resinfo_reactos.c [iso-8859-1] Mon Oct 20 12:06:13
2008
@@ -229,7 +229,7 @@
     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" );