ole32: Add a missing IStream_Release to test_same_apartment_unmarshal_failure.

dlls/ole32/tests/marshal.c

@@ -434,6 +434,8 @@ static void test_same_apartment_unmarshal_failure(void)
     ok(hr == E_NOINTERFACE, "CoUnmarshalInterface should have returned E_NOINTERFACE instead of 0x%08x\n", hr);
 
     ok_no_locks();
+
+    IStream_Release(pStream);
 }
 
 /* tests success case of an interthread marshal */