Fix some compiler warnings

* Unused variables in release build
* Comparison of bool to int

Change-Id: I1ac9b1051b26ae0655d4ff6b92d216926a4785da
Reviewed-by: hjk <hjk121@nokiamail.com>

share/qtcreator/qml/qmlpuppet/qml2puppet/instances/positionernodeinstance.cpp

@@ -96,6 +96,7 @@ void PositionerNodeInstance::refreshLayoutable()
 {
     bool success = QMetaObject::invokeMethod(positioner(), "prePositioning");
     Q_ASSERT(success);
+    Q_UNUSED(success)
 }
 
 }