dmusic: Rename params in GetMasterClock.

dlls/dmusic/dmusic.c

@@ -270,15 +270,16 @@ static HRESULT WINAPI IDirectMusic8Impl_EnumMasterClock(LPDIRECTMUSIC8 iface, DW
     return S_OK;
 }
 
-static HRESULT WINAPI IDirectMusic8Impl_GetMasterClock(LPDIRECTMUSIC8 iface, LPGUID pguidClock, IReferenceClock** ppReferenceClock)
+static HRESULT WINAPI IDirectMusic8Impl_GetMasterClock(LPDIRECTMUSIC8 iface, LPGUID guid_clock, IReferenceClock** reference_clock)
 {
     IDirectMusic8Impl *This = impl_from_IDirectMusic8(iface);
 
-	TRACE("(%p, %p, %p)\n", This, pguidClock, ppReferenceClock);
-	if (pguidClock)
-		*pguidClock = This->pMasterClock->pClockInfo.guidClock;
-	if(ppReferenceClock)
-		*ppReferenceClock = (IReferenceClock *)This->pMasterClock;
+    TRACE("(%p)->(%p, %p)\n", This, guid_clock, reference_clock);
+
+    if (guid_clock)
+        *guid_clock = This->pMasterClock->pClockInfo.guidClock;
+    if (reference_clock)
+        *reference_clock = (IReferenceClock*)This->pMasterClock;
 
     return S_OK;
 }