[Bug 28313] New: Steam client installer (MSI) crashes at the end of installation

http://bugs.winehq.org/show_bug.cgi?id=28313

Summary: Steam client installer (MSI) crashes at the end of
                    installation
           Product: Wine
           Version: 1.3.27
          Platform: x86
               URL: http://cdn.steampowered.com/download/SteamInstall.msi
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msi
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
                CC: [e-mail]
   Regression SHA1: ac0a7b644fa464fa640e06a6e26b2191b5a29a92

Created an attachment (id=36281)
 --> (http://bugs.winehq.org/attachment.cgi?id=36281)
terminal output

In wine-1.3.27-357-gac0a7b6 several, if not all MSI-based application installer
crash (usually at the end of installation). The problem can be reproduced by
downloading and installing the Steam client (it has a reasonable download size,
1.5 MB).

This is due to the following commit:

ac0a7b644fa464fa640e06a6e26b2191b5a29a92 is the first bad commit
commit ac0a7b644fa464fa640e06a6e26b2191b5a29a92
Author: Marcus Meissner 
Date:   Wed Sep 7 15:48:23 2011 +0200

msi: Check for return value of GetUserName (Coverity).

:040000 040000 57680d5a0196f95c2079d6d9668be2acfec0af68
9db4b0c261fe0b19526e608b357f2700b086f436 M    dlls

Reverting the patch on wine-1.3.27-357-gac0a7b6 fixed the problem.

Author of the patch added to CC.

Fedora 15 x86
gcc version 4.6.0 20110603 (Red Hat 4.6.0-10) (GCC)