windowscodecs: TiffDecoder_GetThumbnail should return NULL interface.

f07829da · Dmitry Timoshkov · Alexandre Julliard · 67e7eda9 · f07829da
Commit f07829da authored Jun 25, 2012 by Dmitry Timoshkov Committed by Alexandre Julliard Jun 26, 2012
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tiffformat.c dlls/windowscodecs/tiffformat.c +4 -0

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--- 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;
 }