Valgrind errors in "Mikołaj Zalewski : c omdlg32: Implement CDM_GETFOLDERIDLIST. "

[Dan Kegel]

Hi Mikołaj,
your commit seems to have an uninitialized variable; see
http://kegel.com/wine/valgrind/logs-2008-06-20/vg-comdlg32_filedlg-diff.txt

One of the errors:

 Conditional jump or move depends on uninitialised value(s)
    at  strlenW (unicode.h:212)
    by  lstrlenW (string.c:384)
    by  GetFileDialog95W (filedlg.c:484)
    by  GetOpenFileNameW (filedlg.c:3891)
    by  test_DialogCancel (filedlg.c:90)
    by  func_filedlg (filedlg.c:128)
    by  run_test (test.h:449)
    by  main (test.h:498)
  Uninitialised value was created by a stack allocation
    at  test_DialogCancel (filedlg.c:56)