[PATCH 1/3] mfplat: Do not make a copy when returning GUID attributes (Valgrind).

[Nikolay Sivov]

Signed-off-by: Nikolay Sivov 
---
 dlls/mfplat/main.c | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/dlls/mfplat/main.c b/dlls/mfplat/main.c
index 48e64adeef..6336b1b347 100644
--- a/dlls/mfplat/main.c
+++ b/dlls/mfplat/main.c
@@ -1349,14 +1349,23 @@ HRESULT attributes_GetDouble(struct attributes *attributes, REFGUID key, double

HRESULT attributes_GetGUID(struct attributes *attributes, REFGUID key, GUID *value)
 {
-    PROPVARIANT attrval;
-    HRESULT hr;
+    struct attribute *attribute;
+    HRESULT hr = S_OK;

-    PropVariantInit(&attrval);
-    attrval.vt = VT_CLSID;
-    hr = attributes_get_item(attributes, key, &attrval);
-    if (SUCCEEDED(hr))
-        *value = *attrval.u.puuid;
+    EnterCriticalSection(&attributes->cs);
+
+    attribute = attributes_find_item(attributes, key, NULL);
+    if (attribute)
+    {
+        if (attribute->value.vt == MF_ATTRIBUTE_GUID)
+            *value = *attribute->value.u.puuid;
+        else
+            hr = MF_E_INVALIDTYPE;
+    }
+    else
+        hr = MF_E_ATTRIBUTENOTFOUND;
+
+    LeaveCriticalSection(&attributes->cs);

return hr;
 }