advapi32 tests: fix memory leak (found by Smatch).

[Lionel Debroux]

---
 dlls/advapi32/tests/security.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/dlls/advapi32/tests/security.c b/dlls/advapi32/tests/security.c
index 605f18a..a17931e 100644
--- a/dlls/advapi32/tests/security.c
+++ b/dlls/advapi32/tests/security.c
@@ -2110,6 +2110,7 @@ static void test_PrivateObjectSecurity(void)
     ok(GetLastError() == ERROR_INSUFFICIENT_BUFFER, "Expected error ERROR_INSUFFICIENT_BUFFER, got %u\n", GetLastError());
 
     LocalFree(sec);
+    HeapFree(GetProcessHeap(), 0, buf);
 }
 #undef CHECK_RESULT_AND_FREE
 
-- 
1.5.3.1


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