[PATCH 2/3] mmdevapi: Set DEVPKEY_Device_InstanceId during MMDevice_Create().

[Patrick Hibbs]

From: Patrick Hibbs

According to MSDN, DEVPKEY_Device_InstanceId should be the same value as IMMDevice::GetId().
See also: https://learn.microsoft.com/en-us/windows/win32/coreaudio/device-properties
---
 dlls/mmdevapi/devenum.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dlls/mmdevapi/devenum.c b/dlls/mmdevapi/devenum.c
index d147d246636..cd81d1c34ab 100644
--- a/dlls/mmdevapi/devenum.c
+++ b/dlls/mmdevapi/devenum.c
@@ -548,6 +548,13 @@ static MMDevice *MMDevice_Create(const WCHAR *name, GUID *id, EDataFlow flow, DW

MMDevice_SetPropValue(id, flow, (const PROPERTYKEY*)&DEVPKEY_Device_Driver, &pv);

+            if (!FAILED(IMMDevice_GetId(&(cur->IMMDevice_iface), &pv.pwszVal))) {
+                MMDevice_SetPropValue(id, flow, (const PROPERTYKEY*)&DEVPKEY_Device_InstanceId, &pv);
+                CoTaskMemFree(pv.pwszVal);
+                pv.vt = VT_EMPTY;
+                pv.pwszVal = NULL;
+            }
+
             RegCloseKey(keyprop);
         }
         RegCloseKey(key);