Dmitry Timoshkov : windowscodecs: Check guid pointer for NULL in TiffDecoder_GetContainerFormat.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: a53807e3e88ec63fae355a2e0d7282b3ad0ba09e
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=a53807e3e88ec63fae355a2e0d...

Author: Dmitry Timoshkov 
Date:   Wed Sep 12 15:10:26 2012 +0900

windowscodecs: Check guid pointer for NULL in TiffDecoder_GetContainerFormat.

---

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

diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c
index 05bd59e..05b6aba 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;
 }