From 717cc8fa56b1eb39a372d0c5c561aa30dbbbdd47 Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@qt.io>
Date: Wed, 23 May 2018 15:23:25 +0200
Subject: Fix memory leak in QAxBase::internalInvoke()

Free the return value.
Patch as contributed via bug report.

Task-number: QTBUG-68415
Change-Id: I9696867796db51e4b3df3830c2deb72d2b791987
Reviewed-by: Daniel Friedrich <friedrich@nanosurf.com>
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
---
 src/activeqt/container/qaxbase.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/activeqt/container/qaxbase.cpp b/src/activeqt/container/qaxbase.cpp
index fa3eacf..883f1e9 100644
--- a/src/activeqt/container/qaxbase.cpp
+++ b/src/activeqt/container/qaxbase.cpp
@@ -3682,8 +3682,10 @@ int QAxBase::internalInvoke(QMetaObject::Call call, int index, void **v)
     hres = Invoke(disp, dispid, IID_NULL, LOCALE_USER_DEFAULT, wFlags, &params, &ret, &excepinfo, &argerr);
 
     // get return value
-    if (hres == S_OK && ret.vt != VT_EMPTY)
+    if (hres == S_OK && ret.vt != VT_EMPTY) {
         QVariantToVoidStar(VARIANTToQVariant(ret, slot.typeName()), v[0], slot.typeName());
+        clearVARIANT(&ret);
+    }
 
     // update out parameters
     for (p = 0; p < int(params.cArgs); ++p) {
-- 
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