[Bug 20895] New: Invalid write in DIALOG_CreateIndirect after evil dialog destroys itself in WM_INITDIALOG

http://bugs.winehq.org/show_bug.cgi?id=20895

Summary: Invalid write in DIALOG_CreateIndirect after evil
                    dialog destroys itself in WM_INITDIALOG
           Product: Wine
           Version: 1.1.33
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Keywords: download, source, testcase
          Severity: normal
          Priority: P2
         Component: user32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

http://kegel.com/wine/valgrind/logs/2009-11-05-09.09/vg-user32_dialog.txt
shows
 Invalid write of size 4
    at  DIALOG_CreateIndirect (dialog.c:701)
    by  DialogBoxParamA (dialog.c:840)
    by  test_DialogBoxParamA (dialog.c:960)
    by  func_dialog (dialog.c:1157)
    by  run_test (test.h:535)
    by  main (test.h:585)
  Address 0x7f040428 is not stack'd, malloc'd or (recently) free'd
Error still there as of last run,
http://kegel.com/wine/valgrind/logs/2009-11-30-19.16/vg-user32_dialog.txt

The test is a gnarly situation:
"a dialog which destroys itself on WM_INITDIALOG"

How bulletproof are we supposed to be in that situation?