mfplat: Add MFAllocateWorkQueueEx().

dlls/mfplat/mfplat.spec

@@ -17,7 +17,7 @@
 @ stub LFGetGlobalPool
 @ stub MFAddPeriodicCallback
 @ stdcall MFAllocateWorkQueue(ptr)
-@ stub MFAllocateWorkQueueEx
+@ stdcall MFAllocateWorkQueueEx(long ptr)
 @ stub MFAppendCollection
 @ stub MFAverageTimePerFrameToFrameRate
 @ stub MFBeginCreateFile

dlls/mfplat/queue.c

@@ -388,6 +388,16 @@ HRESULT WINAPI MFAllocateWorkQueue(DWORD *queue)
 }
 
 /***********************************************************************
+ *      MFAllocateWorkQueueEx (mfplat.@)
+ */
+HRESULT WINAPI MFAllocateWorkQueueEx(MFASYNC_WORKQUEUE_TYPE queue_type, DWORD *queue)
+{
+    TRACE("%d, %p.\n", queue_type, queue);
+
+    return alloc_user_queue(queue_type, queue);
+}
+
+/***********************************************************************
  *      MFLockWorkQueue (mfplat.@)
  */
 HRESULT WINAPI MFLockWorkQueue(DWORD queue)