Fix two new / free mismatches

core/src/fpdfapi/fpdf_font/fpdf_font.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../../include/fpdfapi/fpdf_page.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fpdfapi/fpdf_pageobj.h"
 #include "font_int.h"
@@ skipping 110 matching lines @@
     m_bToUnicodeLoaded = FALSE;
     m_pCharMap = NULL;
 }
 FX_BOOL CPDF_Font::Initialize()
 {
     m_pCharMap = FX_NEW CPDF_FontCharMap(this);
     return TRUE;
 }
 CPDF_Font::~CPDF_Font()
 {
-    if (m_pCharMap) {
-        FX_Free(m_pCharMap);
-        m_pCharMap = NULL;
-    }
-    if (m_pToUnicodeMap) {
-        delete m_pToUnicodeMap;
-        m_pToUnicodeMap = NULL;
-    }
+    delete m_pCharMap;
+    m_pCharMap = NULL;
+
+    delete m_pToUnicodeMap;
+    m_pToUnicodeMap = NULL;
+
     if (m_pFontFile) {
         m_pDocument->GetPageData()->ReleaseFontFileStreamAcc((CPDF_Stream*)m_pFontFile->GetStream());
     }
 }
 FX_BOOL CPDF_Font::IsVertWriting() const
 {
     FX_BOOL bVertWriting = FALSE;
     CPDF_CIDFont* pCIDFont = GetCIDFont();
     if (pCIDFont) {
         bVertWriting = pCIDFont->IsVertWriting();
@@ skipping 1612 matching lines @@
 }
 CPDF_Type3Char::~CPDF_Type3Char()
 {
     if (m_pForm) {
         delete m_pForm;
     }
     if (m_pBitmap) {
         delete m_pBitmap;
     }
 }