[cwittich] 31875: don't crash when GetUserNameW is called with NULL - fixes launching of Office 2003 setup

Author: cwittich
Date: Fri Jan 18 20:54:09 2008
New Revision: 31875

URL: http://svn.reactos.org/svn/reactos?rev=31875&view=rev
Log:
don't crash when GetUserNameW is called with NULL - fixes launching of Office 2003
setup

Modified:
    trunk/reactos/dll/win32/advapi32/sec/misc.c

Modified: trunk/reactos/dll/win32/advapi32/sec/misc.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/advapi32/sec/mis…
==============================================================================
--- trunk/reactos/dll/win32/advapi32/sec/misc.c (original)
+++ trunk/reactos/dll/win32/advapi32/sec/misc.c Fri Jan 18 20:54:09 2008
@@ -938,8 +938,11 @@
 			else
 			{
 				*pdwAccountName = dwSrcLen;
-				RtlCopyMemory ( pAccountName, TranslatedName->Name.Buffer,
TranslatedName->Name.Length );
-				                pAccountName[TranslatedName->Name.Length / sizeof(WCHAR)] =
L'\0';
+				if (pAccountName)
+				{
+					RtlCopyMemory ( pAccountName, TranslatedName->Name.Buffer,
TranslatedName->Name.Length );
+					pAccountName[TranslatedName->Name.Length / sizeof(WCHAR)] = L'\0';
+				}
 			}
 			if ( peUse )
 				*peUse = TranslatedName->Use;