windowscodecs: GetThumbnail of the PNG decoder should return NULL interface.

This commit is contained in:
Dmitry Timoshkov 2012-12-10 11:44:12 +08:00 committed by Alexandre Julliard
parent 9fbd3bbed6
commit 03c9c3ce44
1 changed files with 4 additions and 0 deletions

View File

@ -645,6 +645,10 @@ static HRESULT WINAPI PngDecoder_GetThumbnail(IWICBitmapDecoder *iface,
IWICBitmapSource **ppIThumbnail)
{
TRACE("(%p,%p)\n", iface, ppIThumbnail);
if (!ppIThumbnail) return E_INVALIDARG;
*ppIThumbnail = NULL;
return WINCODEC_ERR_CODECNOTHUMBNAIL;
}