dmusic: Increment the refcount when a IReferenceClock pointer is returned.

[Michael Stefaniuc]

---
Issue uncovered by d82e2935e41da81bd9e5576046c362ea091d0fe1
http://bugs.winehq.org/show_bug.cgi?id=36722


 dlls/dmusic/dmusic.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/dlls/dmusic/dmusic.c b/dlls/dmusic/dmusic.c
index 28be851..09a7f53 100644
--- a/dlls/dmusic/dmusic.c
+++ b/dlls/dmusic/dmusic.c
@@ -210,8 +210,10 @@ static HRESULT WINAPI IDirectMusic8Impl_GetMasterClock(LPDIRECTMUSIC8 iface, LPG
 
     if (guid_clock)
         *guid_clock = This->pMasterClock->pClockInfo.guidClock;
-    if (reference_clock)
-        *reference_clock = (IReferenceClock*)This->pMasterClock;
+    if (reference_clock) {
+        *reference_clock = &This->pMasterClock->IReferenceClock_iface;
+        IReferenceClock_AddRef(*reference_clock);
+    }
 
     return S_OK;
 }
-- 
1.8.3.1