windowscodecs: Treat missing GUID list keys as empty.

e53e798a · Vincent Povirk · Alexandre Julliard · 4c0ceace · e53e798a
Commit e53e798a authored Nov 06, 2014 by Vincent Povirk Committed by Alexandre Julliard Nov 13, 2014
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info.c dlls/windowscodecs/info.c +6 -1

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--- 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)
    {