refactor CPDF_Font and subclasses

core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp

Index: core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
diff --git a/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp b/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
index 34877a866a8f2cfe8c1700caccaa13e2033a5c5c..9e4265ee75eb1771c42b6076fbfed9b8115f1984 100644
--- a/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
@@ -1038,17 +1038,18 @@ void CPDF_CID2UnicodeMap::Load(CPDF_CMapManager* pMgr,
   FPDFAPI_LoadCID2UnicodeMap(charset, m_pEmbeddedMap, m_EmbeddedCount);
 }
 
-CPDF_CIDFont::CPDF_CIDFont() : CPDF_Font(PDFFONT_CIDFONT) {
-  m_pCMap = NULL;
-  m_pAllocatedCMap = NULL;
-  m_pCID2UnicodeMap = NULL;
-  m_pAnsiWidths = NULL;
-  m_pCIDToGIDMap = NULL;
-  m_bCIDIsGID = FALSE;
-  m_bAdobeCourierStd = FALSE;
-  m_pTTGSUBTable = NULL;
+CPDF_CIDFont::CPDF_CIDFont()
+    : m_pCMap(nullptr),
+      m_pAllocatedCMap(nullptr),
+      m_pCID2UnicodeMap(nullptr),
+      m_pCIDToGIDMap(nullptr),
+      m_bCIDIsGID(FALSE),
+      m_pAnsiWidths(nullptr),
+      m_bAdobeCourierStd(FALSE),
+      m_pTTGSUBTable(nullptr) {
   FXSYS_memset(m_CharBBox, 0xff, 256 * sizeof(FX_SMALL_RECT));
 }
+
 CPDF_CIDFont::~CPDF_CIDFont() {
   if (m_pAnsiWidths) {
     FX_Free(m_pAnsiWidths);
@@ -1057,12 +1058,14 @@ CPDF_CIDFont::~CPDF_CIDFont() {
   delete m_pCIDToGIDMap;
   delete m_pTTGSUBTable;
 }
+
 FX_WORD CPDF_CIDFont::CIDFromCharCode(FX_DWORD charcode) const {
   if (!m_pCMap) {
     return (FX_WORD)charcode;
   }
   return m_pCMap->CIDFromCharCode(charcode);
 }
+
 FX_BOOL CPDF_CIDFont::IsVertWriting() const {
   return m_pCMap ? m_pCMap->IsVertWriting() : FALSE;
 }