From c44024f1e0be0065a43e87b81c187e0c43b04ab7 Mon Sep 17 00:00:00 2001
From: Dmitry Timoshkov <dmitry@baikal.ru>
Date: Fri, 23 Nov 2012 11:49:09 +0800
Subject: [PATCH] windowscodecs: Add a NULL check to GetFrameCount of the JPEG
 decoder.

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

diff --git a/dlls/windowscodecs/jpegformat.c b/dlls/windowscodecs/jpegformat.c
index eab50f02cd1..e9c722e5197 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;
 }