Get rid of NULLs in xfa/

xfa/fwl/basewidget/fxmath_barcodeimp.cpp

Index: xfa/fwl/basewidget/fxmath_barcodeimp.cpp
diff --git a/xfa/fwl/basewidget/fxmath_barcodeimp.cpp b/xfa/fwl/basewidget/fxmath_barcodeimp.cpp
index 1dc8afbaef77642d1cf09c3b2ee60388efda7c16..4b97520b4e029a51c33c11cce7e104d9b36242b7 100644
--- a/xfa/fwl/basewidget/fxmath_barcodeimp.cpp
+++ b/xfa/fwl/basewidget/fxmath_barcodeimp.cpp
@@ -44,7 +44,7 @@ static CBC_CodeBase* FX_Barcode_CreateBarCodeEngineObject(BC_TYPE type) {
       return new CBC_DataMatrix();
     case BC_UNKNOWN:
     default:
-      return NULL;
+      return nullptr;
   }
 }
 
@@ -56,7 +56,7 @@ CFX_Barcode::~CFX_Barcode() {
 
 FX_BOOL CFX_Barcode::Create(BC_TYPE type) {
   m_pBCEngine = FX_Barcode_CreateBarCodeEngineObject(type);
-  return m_pBCEngine != NULL;
+  return !!m_pBCEngine;
 }
 BC_TYPE CFX_Barcode::GetType() {
   return m_pBCEngine ? m_pBCEngine->GetType() : BC_UNKNOWN;
@@ -221,7 +221,7 @@ FX_BOOL CFX_Barcode::SetFontColor(FX_ARGB color) {
 }
 FX_BOOL CFX_Barcode::SetTextLocation(BC_TEXT_LOC location) {
   typedef FX_BOOL (CBC_CodeBase::*memptrtype)(BC_TEXT_LOC);
-  memptrtype memptr = NULL;
+  memptrtype memptr = nullptr;
   switch (GetType()) {
     case BC_CODE39:
       memptr = (memptrtype)&CBC_Code39::SetTextLocation;
@@ -241,7 +241,7 @@ FX_BOOL CFX_Barcode::SetTextLocation(BC_TEXT_LOC location) {
 }
 FX_BOOL CFX_Barcode::SetWideNarrowRatio(int32_t ratio) {
   typedef FX_BOOL (CBC_CodeBase::*memptrtype)(int32_t);
-  memptrtype memptr = NULL;
+  memptrtype memptr = nullptr;
   switch (GetType()) {
     case BC_CODE39:
       memptr = (memptrtype)&CBC_Code39::SetWideNarrowRatio;
@@ -256,7 +256,7 @@ FX_BOOL CFX_Barcode::SetWideNarrowRatio(int32_t ratio) {
 }
 FX_BOOL CFX_Barcode::SetStartChar(FX_CHAR start) {
   typedef FX_BOOL (CBC_CodeBase::*memptrtype)(FX_CHAR);
-  memptrtype memptr = NULL;
+  memptrtype memptr = nullptr;
   switch (GetType()) {
     case BC_CODABAR:
       memptr = (memptrtype)&CBC_Codabar::SetStartChar;
@@ -268,7 +268,7 @@ FX_BOOL CFX_Barcode::SetStartChar(FX_CHAR start) {
 }
 FX_BOOL CFX_Barcode::SetEndChar(FX_CHAR end) {
   typedef FX_BOOL (CBC_CodeBase::*memptrtype)(FX_CHAR);
-  memptrtype memptr = NULL;
+  memptrtype memptr = nullptr;
   switch (GetType()) {
     case BC_CODABAR:
       memptr = (memptrtype)&CBC_Codabar::SetEndChar;
@@ -280,7 +280,7 @@ FX_BOOL CFX_Barcode::SetEndChar(FX_CHAR end) {
 }
 FX_BOOL CFX_Barcode::SetVersion(int32_t version) {
   typedef FX_BOOL (CBC_CodeBase::*memptrtype)(int32_t);
-  memptrtype memptr = NULL;
+  memptrtype memptr = nullptr;
   switch (GetType()) {
     case BC_QR_CODE:
       memptr = (memptrtype)&CBC_QRCode::SetVersion;
@@ -292,7 +292,7 @@ FX_BOOL CFX_Barcode::SetVersion(int32_t version) {
 }
 FX_BOOL CFX_Barcode::SetErrorCorrectionLevel(int32_t level) {
   typedef FX_BOOL (CBC_CodeBase::*memptrtype)(int32_t);
-  memptrtype memptr = NULL;
+  memptrtype memptr = nullptr;
   switch (GetType()) {
     case BC_QR_CODE:
       memptr = (memptrtype)&CBC_QRCode::SetErrorCorrectionLevel;
@@ -307,7 +307,7 @@ FX_BOOL CFX_Barcode::SetErrorCorrectionLevel(int32_t level) {
 }
 FX_BOOL CFX_Barcode::SetTruncated(FX_BOOL truncated) {
   typedef void (CBC_CodeBase::*memptrtype)(FX_BOOL);
-  memptrtype memptr = NULL;
+  memptrtype memptr = nullptr;
   switch (GetType()) {
     case BC_PDF417:
       memptr = (memptrtype)&CBC_PDF417I::SetTruncated;