Dmitry Timoshkov : windowscodecs: TiffDecoder_GetThumbnail should return NULL interface.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f07829da5750949ad9e7a9c5a370c65b0f6076f8
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=f07829da5750949ad9e7a9c5a370c65b0f6076f8

Author: Dmitry Timoshkov <dmitry at baikal.ru>
Date:   Mon Jun 25 12:26:56 2012 +0900

windowscodecs: TiffDecoder_GetThumbnail should return NULL interface.

---

 dlls/windowscodecs/tiffformat.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c
index cd3703f..d12729f 100644
--- a/dlls/windowscodecs/tiffformat.c
+++ b/dlls/windowscodecs/tiffformat.c
@@ -643,6 +643,10 @@ static HRESULT WINAPI TiffDecoder_GetThumbnail(IWICBitmapDecoder *iface,
     IWICBitmapSource **ppIThumbnail)
 {
     TRACE("(%p,%p)\n", iface, ppIThumbnail);
+
+    if (!ppIThumbnail) return E_INVALIDARG;
+
+    *ppIThumbnail = NULL;
     return WINCODEC_ERR_CODECNOTHUMBNAIL;
 }