Michael Stefaniuc : dmusic: Don' t leak memory on IReferenceClock creation failure.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 19eba06a2658d5abab32642071140414a0be18b6
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=19eba06a2658d5abab32642071140414a0be18b6

Author: Michael Stefaniuc <mstefani at redhat.de>
Date:   Sat May 31 19:20:14 2014 +0200

dmusic: Don't leak memory on IReferenceClock creation failure.

Also lock/unlock the module only on creation/destruction of the object.

---

 dlls/dmusic/clock.c |   17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/dlls/dmusic/clock.c b/dlls/dmusic/clock.c
index 2a8cd09..46a035f 100644
--- a/dlls/dmusic/clock.c
+++ b/dlls/dmusic/clock.c
@@ -50,8 +50,6 @@ static ULONG WINAPI IReferenceClockImpl_AddRef(IReferenceClock *iface)
 
     TRACE("(%p)->(): new ref = %u\n", This, ref);
 
-    DMUSIC_LockModule();
-
     return ref;
 }
 
@@ -62,10 +60,10 @@ static ULONG WINAPI IReferenceClockImpl_Release(IReferenceClock *iface)
 
     TRACE("(%p)->(): new ref = %u\n", This, ref);
 
-    if (!ref)
+    if (!ref) {
         HeapFree(GetProcessHeap(), 0, This);
-
-    DMUSIC_UnlockModule();
+        DMUSIC_UnlockModule();
+    }
 
     return ref;
 }
@@ -123,6 +121,7 @@ static const IReferenceClockVtbl ReferenceClock_Vtbl = {
 HRESULT DMUSIC_CreateReferenceClockImpl(LPCGUID riid, LPVOID* ret_iface, LPUNKNOWN unkouter)
 {
     IReferenceClockImpl* clock;
+    HRESULT hr;
 
     TRACE("(%p,%p,%p)\n", riid, ret_iface, unkouter);
 
@@ -133,9 +132,13 @@ HRESULT DMUSIC_CreateReferenceClockImpl(LPCGUID riid, LPVOID* ret_iface, LPUNKNO
     }
 
     clock->IReferenceClock_iface.lpVtbl = &ReferenceClock_Vtbl;
-    clock->ref = 0; /* Will be inited by QueryInterface */
+    clock->ref = 1;
     clock->rtTime = 0;
     clock->pClockInfo.dwSize = sizeof (DMUS_CLOCKINFO);
 
-    return IReferenceClockImpl_QueryInterface((IReferenceClock*)clock, riid, ret_iface);
+    DMUSIC_LockModule();
+    hr = IReferenceClockImpl_QueryInterface(&clock->IReferenceClock_iface, riid, ret_iface);
+    IReferenceClockImpl_Release(&clock->IReferenceClock_iface);
+
+    return hr;
 }