(resend) shell32: handle NULL pName in ShellLink fnSetDescription.

[testbot at testbot.winehq.org]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
http://testbot.winehq.org/JobDetails.pl?Key=1835

Your paranoid android.


=== WNT4WSSP6 (32 bit shelllink) ===
shelllink.c:144: Test failed: GetDescription returned 'Some description'