From a53807e3e88ec63fae355a2e0d7282b3ad0ba09e Mon Sep 17 00:00:00 2001
From: Dmitry Timoshkov <dmitry@baikal.ru>
Date: Wed, 12 Sep 2012 15:10:26 +0900
Subject: [PATCH] windowscodecs: Check guid pointer for NULL in
 TiffDecoder_GetContainerFormat.

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

diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c
index 05bd59e863f..05b6aba81cd 100644
--- a/dlls/windowscodecs/tiffformat.c
+++ b/dlls/windowscodecs/tiffformat.c
@@ -595,6 +595,8 @@ exit:
 static HRESULT WINAPI TiffDecoder_GetContainerFormat(IWICBitmapDecoder *iface,
     GUID *pguidContainerFormat)
 {
+    if (!pguidContainerFormat) return E_INVALIDARG;
+
     memcpy(pguidContainerFormat, &GUID_ContainerFormatTiff, sizeof(GUID));
     return S_OK;
 }