mshtml: Don't release window if it wasn't created.

[Jacek Caban]

---
  dlls/mshtml/htmldoc.c |    5 ++++-
  1 files changed, 4 insertions(+), 1 deletions(-)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0a6e7dfacf51f0e1e4e7615749e5d77d24f1fd10.diff
Type: text/x-patch
Size: 859 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20070213/69995496/0a6e7dfacf51f0e1e4e7615749e5d77d24f1fd10.bin