Get rid of NULLs in xfa/

xfa/fgas/font/fgas_font.h

Index: xfa/fgas/font/fgas_font.h
diff --git a/xfa/fgas/font/fgas_font.h b/xfa/fgas/font/fgas_font.h
index 5d3a44092da52b5d2639003312951e3f31545f6d..e6f6880628c86a840348e388903052d64821eb40 100644
--- a/xfa/fgas/font/fgas_font.h
+++ b/xfa/fgas/font/fgas_font.h
@@ -153,26 +153,26 @@ class IFGAS_FontMgr {
   virtual IFGAS_Font* GetDefFontByCodePage(
       uint16_t wCodePage,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* GetDefFontByCharset(
       uint8_t nCharset,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* GetDefFontByUnicode(
       FX_WCHAR wUnicode,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* GetDefFontByLanguage(
       uint16_t wLanguage,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* LoadFont(const FX_WCHAR* pszFontFamily,
                                uint32_t dwFontStyles,
                                uint16_t wCodePage = 0xFFFF) = 0;
   virtual IFGAS_Font* LoadFont(const uint8_t* pBuffer, int32_t iLength) = 0;
   virtual IFGAS_Font* LoadFont(const FX_WCHAR* pszFileName) = 0;
   virtual IFGAS_Font* LoadFont(IFX_Stream* pFontStream,
-                               const FX_WCHAR* pszFontAlias = NULL,
+                               const FX_WCHAR* pszFontAlias = nullptr,
                                uint32_t dwFontStyles = 0,
                                uint16_t wCodePage = 0,
                                FX_BOOL bSaveStream = FALSE) = 0;
@@ -193,23 +193,23 @@ class IFGAS_FontMgr {
   virtual IFGAS_Font* GetDefFontByCodePage(
       uint16_t wCodePage,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* GetDefFontByCharset(
       uint8_t nCharset,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* GetDefFontByUnicode(
       FX_WCHAR wUnicode,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* GetDefFontByLanguage(
       uint16_t wLanguage,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* GetFontByCodePage(
       uint16_t wCodePage,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   inline IFGAS_Font* LoadFont(const FX_WCHAR* pszFontFamily,
                               uint32_t dwFontStyles,
                               uint16_t wCodePage) {
@@ -218,25 +218,25 @@ class IFGAS_FontMgr {
   virtual IFGAS_Font* GetFontByCharset(
       uint8_t nCharset,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* GetFontByUnicode(
       FX_WCHAR wUnicode,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* GetFontByLanguage(
       uint16_t wLanguage,
       uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = NULL) = 0;
+      const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual IFGAS_Font* LoadFont(const uint8_t* pBuffer,
                                int32_t iLength,
                                int32_t iFaceIndex,
-                               int32_t* pFaceCount = NULL) = 0;
+                               int32_t* pFaceCount = nullptr) = 0;
   virtual IFGAS_Font* LoadFont(const FX_WCHAR* pszFileName,
                                int32_t iFaceIndex,
-                               int32_t* pFaceCount = NULL) = 0;
+                               int32_t* pFaceCount = nullptr) = 0;
   virtual IFGAS_Font* LoadFont(IFX_Stream* pFontStream,
                                int32_t iFaceIndex,
-                               int32_t* pFaceCount = NULL,
+                               int32_t* pFaceCount = nullptr,
                                FX_BOOL bSaveStream = FALSE) = 0;
 
   virtual void ClearFontCache() = 0;