[Bug 30254] New: SmartScore X Pro demo crashes on startup

http://bugs.winehq.org/show_bug.cgi?id=30254

Bug #: 30254
           Summary: SmartScore X Pro demo crashes on startup
           Product: Wine
           Version: 1.5.0
          Platform: x86
               URL: http://www.musitek.com/Demos/SSXDemo.msi
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: user32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

Created attachment 39516
  --> http://bugs.winehq.org/attachment.cgi?id=39516
backtrace

The program seems to enter a messaging loop on startup: it calls EndDialog
which calls WINPOS_ActivateOtherWindow which ends up activating the destroyed
dialog.

The resulting crash is a divide-by-zero because SendMessage fails (max
recursion) and returns zero for LB_GETITEMHEIGHT.