[3/3] windowscodecs: Implement TiffFrameDecode_GetThumbnail. Take 2.

[Dmitry Timoshkov]

---
 dlls/windowscodecs/tiffformat.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c
index a64d65f..5351098 100644
--- a/dlls/windowscodecs/tiffformat.c
+++ b/dlls/windowscodecs/tiffformat.c
@@ -1096,8 +1096,12 @@ static HRESULT WINAPI TiffFrameDecode_GetColorContexts(IWICBitmapFrameDecode *if
 static HRESULT WINAPI TiffFrameDecode_GetThumbnail(IWICBitmapFrameDecode *iface,
     IWICBitmapSource **ppIThumbnail)
 {
-    FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
-    return E_NOTIMPL;
+    TRACE("(%p,%p)\n", iface, ppIThumbnail);
+
+    if (!ppIThumbnail) return E_INVALIDARG;
+
+    *ppIThumbnail = NULL;
+    return WINCODEC_ERR_CODECNOTHUMBNAIL;
 }
 
 static const IWICBitmapFrameDecodeVtbl TiffFrameDecode_Vtbl = {
-- 
1.7.11