Dmitry Timoshkov : windowscodecs: Add a NULL check to GetFrameCount of the JPEG decoder.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c44024f1e0be0065a43e87b81c187e0c43b04ab7
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=c44024f1e0be0065a43e87b81c...

Author: Dmitry Timoshkov 
Date:   Fri Nov 23 11:49:09 2012 +0800

windowscodecs: Add a NULL check to GetFrameCount of the JPEG decoder.

---

dlls/windowscodecs/jpegformat.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/dlls/windowscodecs/jpegformat.c b/dlls/windowscodecs/jpegformat.c
index eab50f0..e9c722e 100644
--- a/dlls/windowscodecs/jpegformat.c
+++ b/dlls/windowscodecs/jpegformat.c
@@ -430,6 +430,8 @@ static HRESULT WINAPI JpegDecoder_GetThumbnail(IWICBitmapDecoder *iface,
 static HRESULT WINAPI JpegDecoder_GetFrameCount(IWICBitmapDecoder *iface,
     UINT *pCount)
 {
+    if (!pCount) return E_INVALIDARG;
+
     *pCount = 1;
     return S_OK;
 }