Use UnownedPtr<> in CPDF_ObjectWalker.

Change-Id: I99eed369f4d44f92607a0a58ba24e8b62ee348f7
Reviewed-on: https://pdfium-review.googlesource.com/40671
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/core/fpdfapi/parser/cpdf_object_walker.cpp b/core/fpdfapi/parser/cpdf_object_walker.cpp
index 3aaa25e9f7..8424c0fc89 100644
--- a/core/fpdfapi/parser/cpdf_object_walker.cpp
+++ b/core/fpdfapi/parser/cpdf_object_walker.cpp
@@ -124,19 +124,19 @@ CPDF_ObjectWalker::MakeIterator(const CPDF_Object* object) {
 }
 
 CPDF_ObjectWalker::CPDF_ObjectWalker(const CPDF_Object* root)
-    : next_object_(root), parent_object_(nullptr), current_depth_(0) {}
+    : next_object_(root) {}
 
-CPDF_ObjectWalker::~CPDF_ObjectWalker() {}
+CPDF_ObjectWalker::~CPDF_ObjectWalker() = default;
 
 const CPDF_Object* CPDF_ObjectWalker::GetNext() {
   while (!stack_.empty() || next_object_) {
     if (next_object_) {
-      auto new_iterator = MakeIterator(next_object_);
+      auto new_iterator = MakeIterator(next_object_.Get());
       if (new_iterator) {
         // Schedule walk within composite objects.
         stack_.push(std::move(new_iterator));
       }
-      auto* result = next_object_;
+      auto* result = next_object_.Get();
       next_object_ = nullptr;
       return result;
     }