Pass retained argument to CFX_StockFontArray::SetFont()

-- in turn, do the same for CPDF_FontGlobals::Set()

Bug: pdfium:1843
Change-Id: I5ab6ed6290d980fef9f4c3b9a50be588ee6511c5
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/95451
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

core/fpdfapi/font/cfx_stockfontarray.cpp

diff --git a/core/fpdfapi/font/cfx_stockfontarray.cpp b/core/fpdfapi/font/cfx_stockfontarray.cpp
index 231a1b5..ada2ce4 100644
--- a/core/fpdfapi/font/cfx_stockfontarray.cpp
+++ b/core/fpdfapi/font/cfx_stockfontarray.cpp
@@ -7,6 +7,7 @@
 #include "core/fpdfapi/font/cfx_stockfontarray.h"
 
 #include <iterator>
+#include <utility>
 
 #include "core/fpdfapi/font/cpdf_font.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
@@ -35,7 +36,7 @@
 }
 
 void CFX_StockFontArray::SetFont(CFX_FontMapper::StandardFont index,
-                                 const RetainPtr<CPDF_Font>& pFont) {
+                                 RetainPtr<CPDF_Font> pFont) {
   if (index < std::size(m_StockFonts))
-    m_StockFonts[index] = pFont;
+    m_StockFonts[index] = std::move(pFont);
 }

core/fpdfapi/font/cfx_stockfontarray.h

diff --git a/core/fpdfapi/font/cfx_stockfontarray.h b/core/fpdfapi/font/cfx_stockfontarray.h
index 90ae04b..6a1f930 100644
--- a/core/fpdfapi/font/cfx_stockfontarray.h
+++ b/core/fpdfapi/font/cfx_stockfontarray.h
@@ -18,8 +18,7 @@
   ~CFX_StockFontArray();
 
   RetainPtr<CPDF_Font> GetFont(CFX_FontMapper::StandardFont index) const;
-  void SetFont(CFX_FontMapper::StandardFont index,
-               const RetainPtr<CPDF_Font>& pFont);
+  void SetFont(CFX_FontMapper::StandardFont index, RetainPtr<CPDF_Font> pFont);
 
  private:
   RetainPtr<CPDF_Font> m_StockFonts[14];

core/fpdfapi/font/cpdf_fontglobals.cpp

diff --git a/core/fpdfapi/font/cpdf_fontglobals.cpp b/core/fpdfapi/font/cpdf_fontglobals.cpp
index 0d5cb69..1873a01 100644
--- a/core/fpdfapi/font/cpdf_fontglobals.cpp
+++ b/core/fpdfapi/font/cpdf_fontglobals.cpp
@@ -6,6 +6,8 @@
 
 #include "core/fpdfapi/font/cpdf_fontglobals.h"
 
+#include <utility>
+
 #include "core/fpdfapi/cmaps/CNS1/cmaps_cns1.h"
 #include "core/fpdfapi/cmaps/GB1/cmaps_gb1.h"
 #include "core/fpdfapi/cmaps/Japan1/cmaps_japan1.h"
@@ -74,10 +76,10 @@
 
 void CPDF_FontGlobals::Set(CPDF_Document* pDoc,
                            CFX_FontMapper::StandardFont index,
-                           const RetainPtr<CPDF_Font>& pFont) {
+                           RetainPtr<CPDF_Font> pFont) {
   if (!pdfium::Contains(m_StockMap, pDoc))
     m_StockMap[pDoc] = std::make_unique<CFX_StockFontArray>();
-  m_StockMap[pDoc]->SetFont(index, pFont);
+  m_StockMap[pDoc]->SetFont(index, std::move(pFont));
 }
 
 void CPDF_FontGlobals::Clear(CPDF_Document* pDoc) {

core/fpdfapi/font/cpdf_fontglobals.h

diff --git a/core/fpdfapi/font/cpdf_fontglobals.h b/core/fpdfapi/font/cpdf_fontglobals.h
index 8d66122..e39555b 100644
--- a/core/fpdfapi/font/cpdf_fontglobals.h
+++ b/core/fpdfapi/font/cpdf_fontglobals.h
@@ -34,7 +34,7 @@
                             CFX_FontMapper::StandardFont index);
   void Set(CPDF_Document* pDoc,
            CFX_FontMapper::StandardFont index,
-           const RetainPtr<CPDF_Font>& pFont);
+           RetainPtr<CPDF_Font> pFont);
 
   void SetEmbeddedCharset(CIDSet idx, pdfium::span<const FXCMAP_CMap> map) {
     m_EmbeddedCharsets[idx] = map;