[Bug 7849] New: msxml3 installer fails if you use /q option

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=7849

Summary: msxml3 installer fails if you use /q option
           Product: Wine
           Version: CVS
          Platform: Other
               URL: http://download.microsoft.com/download/8/8/8/888f34b7-
                    4f54-4f06-8dac-fa29b19f33dd/msxml3.msi
        OS/Version: other
            Status: NEW
          Keywords: download, Installer
          Severity: normal
          Priority: P2
         Component: wine-msi
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Unattended installation of msxml3 fails.  To repeat:
$ wine msiexec /i msxml3.msi /q || echo Failed
wine sets exit status 67, and you see (among other messages):
err:msi:ITERATE_Actions Execution halted, action L"InstallFinalize" returned 1603
I'll attach a log.