[PATCH] mf: Fix timer instance leak on error path in SetTimer().

[Nikolay Sivov]

Signed-off-by: Nikolay Sivov 
---
 dlls/mf/session.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/dlls/mf/session.c b/dlls/mf/session.c
index d6b881218b..25832afdbb 100644
--- a/dlls/mf/session.c
+++ b/dlls/mf/session.c
@@ -4093,15 +4093,19 @@ static HRESULT WINAPI present_clock_timer_SetTimer(IMFTimer *iface, DWORD flags,
         hr = MF_S_CLOCK_STOPPED;

if (SUCCEEDED(hr))
+    {
         list_add_tail(&clock->timers, &clock_timer->entry);
+        if (cancel_key)
+        {
+            *cancel_key = &clock_timer->IUnknown_iface;
+            IUnknown_AddRef(*cancel_key);
+        }
+    }

LeaveCriticalSection(&clock->cs);

-    if (SUCCEEDED(hr) && cancel_key)
-    {
-        *cancel_key = &clock_timer->IUnknown_iface;
-        IUnknown_AddRef(*cancel_key);
-    }
+    if (FAILED(hr))
+        IUnknown_Release(&clock_timer->IUnknown_iface);

return hr;
 }