[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/misc...
==============================================================================
--- 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;