include: Add missing DPACCOUNTDESC to dplay.h.

Signed-off-by: Vijay Kiran Kamuju <infyquest@gmail.com>
Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

include/dplay.h

@@ -332,6 +332,19 @@ typedef struct tagDPSECURITYDESC
 
 typedef const DPSECURITYDESC *LPCDPSECURITYDESC;
 
+typedef struct
+{
+    DWORD dwSize;
+    DWORD dwFlags;
+    union
+    {
+        LPWSTR  lpszAccountID;
+        LPSTR   lpszAccountIDA;
+    } DUMMYUNIONNAME;
+} DPACCOUNTDESC, *LPDPACCOUNTDESC;
+
+typedef const DPACCOUNTDESC *LPCDPACCOUNTDESC;
+
 typedef struct tagDPCREDENTIALS
 {
     DWORD dwSize;               /* Size of structure */