More IFX_ interface cleanup.

xfa/fxfa/app/xfa_fontmgr.cpp

Index: xfa/fxfa/app/xfa_fontmgr.cpp
diff --git a/xfa/fxfa/app/xfa_fontmgr.cpp b/xfa/fxfa/app/xfa_fontmgr.cpp
index 02b44be7899c48be4bb2caf4f4cc4023b8522fb3..7be7912c88455ccbd78c00bd3da83fec1c7ad802 100644
--- a/xfa/fxfa/app/xfa_fontmgr.cpp
+++ b/xfa/fxfa/app/xfa_fontmgr.cpp
@@ -1874,6 +1874,7 @@ IFX_Font* CXFA_PDFFontMgr::FindFont(CFX_ByteString strPsName,
   }
   return NULL;
 }
+
 IFX_Font* CXFA_PDFFontMgr::GetFont(const CFX_WideStringC& wsFontFamily,
                                    uint32_t dwFontStyles,
                                    CPDF_Font** pPDFFont,
@@ -1894,6 +1895,7 @@ IFX_Font* CXFA_PDFFontMgr::GetFont(const CFX_WideStringC& wsFontFamily,
     m_FontMap[strKey] = pFont;
   return pFont;
 }
+
 CFX_ByteString CXFA_PDFFontMgr::PsNameToFontName(
     const CFX_ByteString& strPsName,
     FX_BOOL bBold,
@@ -1907,6 +1909,7 @@ CFX_ByteString CXFA_PDFFontMgr::PsNameToFontName(
   }
   return strPsName;
 }
+
 FX_BOOL CXFA_PDFFontMgr::PsNameMatchDRFontName(
     const CFX_ByteStringC& bsPsName,
     FX_BOOL bBold,
@@ -1996,10 +1999,13 @@ FX_BOOL CXFA_PDFFontMgr::GetCharWidth(IFX_Font* pFont,
   iWidth = pPDFFont->GetCharWidthF(wUnicode);
   return TRUE;
 }
-CXFA_FontMgr::CXFA_FontMgr() : m_pDefFontMgr(NULL) {}
+
+CXFA_FontMgr::CXFA_FontMgr() : m_pDefFontMgr(nullptr) {}
+
 CXFA_FontMgr::~CXFA_FontMgr() {
   DelAllMgrMap();
 }
+
 IFX_Font* CXFA_FontMgr::GetFont(CXFA_FFDoc* hDoc,
                                 const CFX_WideStringC& wsFontFamily,
                                 uint32_t dwFontStyles,