[rpcrt4/tests] Don't crash on WinXP SP3

[Paul Vriens]

Hi,

Windows XP SP3 sets address to NULL so check this to avoid a crash later on in
strcmp.

Changelog
     Don't crash on WinXP SP3
-- 
Cheers,

Paul.


-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0008-Don-t-crash-on-WinXP-SP3.patch
Type: text/x-patch
Size: 1005 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20080211/784c5b09/attachment.bin