Detect resursive loading of type3 font char to avoid infinite loop

core/fpdfapi/fpdf_page/fpdf_page_parser.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 "core/fpdfapi/fpdf_page/pageint.h"
 
 #include <memory>
 #include <utility>
@@ skipping 1234 matching lines @@
       pCTM[2] = m_pCurStates->m_CTM.b;
       pCTM[3] = m_pCurStates->m_CTM.d;
     }
     pText->SetSegments(pStrs, pKerning, nsegs);
     pText->m_PosX = m_pCurStates->m_TextX;
     pText->m_PosY = m_pCurStates->m_TextY + m_pCurStates->m_TextRise;
     ConvertTextSpace(pText->m_PosX, pText->m_PosY);
     FX_FLOAT x_advance;
     FX_FLOAT y_advance;
     pText->CalcPositionData(&x_advance, &y_advance,
-                            m_pCurStates->m_TextHorzScale, m_Level);
+                            m_pCurStates->m_TextHorzScale);
     m_pCurStates->m_TextX += x_advance;
     m_pCurStates->m_TextY += y_advance;
     if (TextRenderingModeIsClipMode(text_mode)) {
       m_ClipTextList.push_back(
           std::unique_ptr<CPDF_TextObject>(pText->Clone()));
     }
     m_pObjectHolder->GetPageObjectList()->push_back(std::move(pText));
   }
   if (pKerning && pKerning[nsegs - 1] != 0) {
     if (!pFont->IsVertWriting()) {
@@ skipping 407 matching lines @@
         } else {
           PDF_ReplaceAbbr(pElement);
         }
       }
       break;
     }
     default:
       break;
   }
 }