Pass retained argument to CPDF_Creator

Change-Id: I905e6dd5e00d7dba44b8b84a48d2338072095892
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/95450
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

core/fpdfapi/edit/cpdf_creator.cpp

diff --git a/core/fpdfapi/edit/cpdf_creator.cpp b/core/fpdfapi/edit/cpdf_creator.cpp
index 9d60e85..6e0019e 100644
--- a/core/fpdfapi/edit/cpdf_creator.cpp
+++ b/core/fpdfapi/edit/cpdf_creator.cpp
@@ -7,6 +7,7 @@
 #include "core/fpdfapi/edit/cpdf_creator.h"
 
 #include <algorithm>
+#include <utility>
 
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_crypto_handler.h"
@@ -35,8 +36,7 @@
 
 class CFX_FileBufferArchive final : public IFX_ArchiveStream {
  public:
-  explicit CFX_FileBufferArchive(
-      const RetainPtr<IFX_RetainableWriteStream>& file);
+  explicit CFX_FileBufferArchive(RetainPtr<IFX_RetainableWriteStream> file);
   ~CFX_FileBufferArchive() override;
 
   bool WriteBlock(const void* pBuf, size_t size) override;
@@ -52,9 +52,9 @@
 };
 
 CFX_FileBufferArchive::CFX_FileBufferArchive(
-    const RetainPtr<IFX_RetainableWriteStream>& file)
-    : buffer_(kArchiveBufferSize), backing_file_(file) {
-  DCHECK(file);
+    RetainPtr<IFX_RetainableWriteStream> file)
+    : buffer_(kArchiveBufferSize), backing_file_(std::move(file)) {
+  DCHECK(backing_file_);
 }
 
 CFX_FileBufferArchive::~CFX_FileBufferArchive() {
@@ -123,13 +123,13 @@
 }  // namespace
 
 CPDF_Creator::CPDF_Creator(CPDF_Document* pDoc,
-                           const RetainPtr<IFX_RetainableWriteStream>& archive)
+                           RetainPtr<IFX_RetainableWriteStream> archive)
     : m_pDocument(pDoc),
       m_pParser(pDoc->GetParser()),
       m_pEncryptDict(m_pParser ? m_pParser->GetEncryptDict() : nullptr),
       m_pSecurityHandler(m_pParser ? m_pParser->GetSecurityHandler() : nullptr),
       m_dwLastObjNum(m_pDocument->GetLastObjNum()),
-      m_Archive(std::make_unique<CFX_FileBufferArchive>(archive)) {}
+      m_Archive(std::make_unique<CFX_FileBufferArchive>(std::move(archive))) {}
 
 CPDF_Creator::~CPDF_Creator() = default;
 

core/fpdfapi/edit/cpdf_creator.h

diff --git a/core/fpdfapi/edit/cpdf_creator.h b/core/fpdfapi/edit/cpdf_creator.h
index d85d8cf..60c4b6b 100644
--- a/core/fpdfapi/edit/cpdf_creator.h
+++ b/core/fpdfapi/edit/cpdf_creator.h
@@ -29,7 +29,7 @@
 class CPDF_Creator {
  public:
   CPDF_Creator(CPDF_Document* pDoc,
-               const RetainPtr<IFX_RetainableWriteStream>& archive);
+               RetainPtr<IFX_RetainableWriteStream> archive);
   ~CPDF_Creator();
 
   void RemoveSecurity();