Get rid of NULLs in xfa/

xfa/fxfa/app/xfa_textlayout.h

Index: xfa/fxfa/app/xfa_textlayout.h
diff --git a/xfa/fxfa/app/xfa_textlayout.h b/xfa/fxfa/app/xfa_textlayout.h
index a4bd9cede7d593e60c85f8244a37c856ebdd03a7..4632f46400f5e6068226aefb5482b4008730df8c 100644
--- a/xfa/fxfa/app/xfa_textlayout.h
+++ b/xfa/fxfa/app/xfa_textlayout.h
@@ -151,9 +151,9 @@ class CXFA_LoaderContext {
         m_fStartLineOffset(0),
         m_iChar(0),
         m_iTotalLines(-1),
-        m_pXMLNode(NULL),
-        m_pNode(NULL),
-        m_pParentStyle(NULL),
+        m_pXMLNode(nullptr),
+        m_pNode(nullptr),
+        m_pParentStyle(nullptr),
         m_dwFlags(0) {}
   FX_BOOL m_bSaveLineHeight;
   FX_FLOAT m_fWidth;
@@ -337,7 +337,7 @@ class CXFA_TextLayout {
   FX_BOOL CalcSize(const CFX_SizeF& minSize,
                    const CFX_SizeF& maxSize,
                    CFX_SizeF& defaultSize);
-  FX_BOOL Layout(const CFX_SizeF& size, FX_FLOAT* fHeight = NULL);
+  FX_BOOL Layout(const CFX_SizeF& size, FX_FLOAT* fHeight = nullptr);
   void ItemBlocks(const CFX_RectF& rtText, int32_t iBlockIndex);
   FX_BOOL DrawString(CFX_RenderDevice* pFxDevice,
                      const CFX_Matrix& tmDoc2Device,
@@ -359,7 +359,7 @@ class CXFA_TextLayout {
                  FDE_CSSDISPLAY eDisplay,
                  FX_FLOAT fLineWidth,
                  CFDE_XMLNode* pXMLNode,
-                 IFDE_CSSComputedStyle* pParentStyle = NULL);
+                 IFDE_CSSComputedStyle* pParentStyle = nullptr);
   FX_BOOL Loader(const CFX_SizeF& szText,
                  FX_FLOAT& fLinePos,
                  FX_BOOL bSavePieces = TRUE);
@@ -372,7 +372,7 @@ class CXFA_TextLayout {
                        FX_FLOAT& fLinePos,
                        IFDE_CSSComputedStyle* pParentStyle,
                        FX_BOOL bSavePieces,
-                       CXFA_LinkUserData* pLinkData = NULL,
+                       CXFA_LinkUserData* pLinkData = nullptr,
                        FX_BOOL bEndBreak = TRUE,
                        FX_BOOL bIsOl = FALSE,
                        int32_t iLiCount = 0);