Vincent Povirk : windowscodecs: Treat missing GUID list keys as empty.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e53e798aa7d9b4d31e9df922ecabf8614f467458
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=e53e798aa7d9b4d31e9df922ecabf8614f467458

Author: Vincent Povirk <vincent at codeweavers.com>
Date:   Thu Nov  6 16:07:17 2014 -0600

windowscodecs: Treat missing GUID list keys as empty.

---

 dlls/windowscodecs/info.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/dlls/windowscodecs/info.c b/dlls/windowscodecs/info.c
index 5f42994..d42d726 100644
--- a/dlls/windowscodecs/info.c
+++ b/dlls/windowscodecs/info.c
@@ -151,7 +151,12 @@ static HRESULT ComponentInfo_GetGuidList(HKEY classkey, LPCWSTR subkeyname,
         return E_INVALIDARG;
 
     ret = RegOpenKeyExW(classkey, subkeyname, 0, KEY_READ, &subkey);
-    if (ret != ERROR_SUCCESS) return HRESULT_FROM_WIN32(ret);
+    if (ret == ERROR_FILE_NOT_FOUND)
+    {
+        *actual_size = 0;
+        return S_OK;
+    }
+    else if (ret != ERROR_SUCCESS) return HRESULT_FROM_WIN32(ret);
 
     if (buffer)
     {