[gjs/gnome-3-30] object: Fix build with --enable-dtrace

[Philip Chimento <pchimento src gnome org>]

commit c5698eab201d6504f239d3a87747b5020aaeda80
Author: Philip Chimento <philip chimento gmail com>
Date:   Sat Oct 6 15:56:50 2018 -0700

    object: Fix build with --enable-dtrace
    
    We don't build with this option very often, so this has been broken for a
    while.
    
    Closes: #196

 gi/object.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gi/object.cpp b/gi/object.cpp
index 242abfae..855671cf 100644
--- a/gi/object.cpp
+++ b/gi/object.cpp
@@ -1618,7 +1618,7 @@ void ObjectBase::finalize(JSFreeOp* fop, JSObject* obj) {
 ObjectInstance::~ObjectInstance() {
     debug_lifecycle("Finalize");
 
-    TRACE(GJS_OBJECT_PROXY_FINALIZE(priv, m_gobj, ns(), name()));
+    TRACE(GJS_OBJECT_PROXY_FINALIZE(this, m_gobj, ns(), name()));
 
     invalidate_all_closures();