Get rid of NULLs in fpdfsdk/

fpdfsdk/fsdk_annothandler.cpp

Index: fpdfsdk/fsdk_annothandler.cpp
diff --git a/fpdfsdk/fsdk_annothandler.cpp b/fpdfsdk/fsdk_annothandler.cpp
index cbcb53e1691a863b3c98115f7cef1c53d9a9ab80..eda3b49058034dccaba177dafcf5ac2c9a123e3e 100644
--- a/fpdfsdk/fsdk_annothandler.cpp
+++ b/fpdfsdk/fsdk_annothandler.cpp
@@ -88,7 +88,7 @@ CPDFSDK_Annot* CPDFSDK_AnnotHandlerMgr::NewAnnot(CXFA_FFWidget* pAnnot,
     return pAnnotHandler->NewAnnot(pAnnot, pPageView);
   }
 
-  return NULL;
+  return nullptr;
 }
 #endif  // PDF_ENABLE_XFA
 
@@ -367,8 +367,8 @@ CPDFSDK_Annot* CPDFSDK_AnnotHandlerMgr::GetNextAnnot(CPDFSDK_Annot* pSDKAnnot,
 #ifdef PDF_ENABLE_XFA
   CPDFSDK_PageView* pPageView = pSDKAnnot->GetPageView();
   CPDFXFA_Page* pPage = pPageView->GetPDFXFAPage();
-  if (pPage == NULL)
-    return NULL;
+  if (!pPage)
+    return nullptr;
   if (pPage->GetPDFPage()) {  // for pdf annots.
     CBA_AnnotIterator ai(pSDKAnnot->GetPageView(), pSDKAnnot->GetType(), "");
     CPDFSDK_Annot* pNext =
@@ -441,7 +441,7 @@ CPDFSDK_Annot* CPDFSDK_BFAnnotHandler::NewAnnot(CPDF_Annot* pAnnot,
 #ifdef PDF_ENABLE_XFA
 CPDFSDK_Annot* CPDFSDK_BFAnnotHandler::NewAnnot(CXFA_FFWidget* hWidget,
                                                 CPDFSDK_PageView* pPage) {
-  return NULL;
+  return nullptr;
 }
 #endif  // PDF_ENABLE_XFA
 
@@ -653,7 +653,7 @@ void CPDFSDK_BFAnnotHandler::OnLoad(CPDFSDK_Annot* pAnnot) {
 
   CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
   if (!pWidget->IsAppearanceValid())
-    pWidget->ResetAppearance(NULL, FALSE);
+    pWidget->ResetAppearance(nullptr, FALSE);
 
   int nFieldType = pWidget->GetFieldType();
   if (nFieldType == FIELDTYPE_TEXTFIELD || nFieldType == FIELDTYPE_COMBOBOX) {
@@ -736,7 +736,7 @@ CPDFSDK_Annot* CPDFSDK_XFAAnnotHandler::NewAnnot(CXFA_FFWidget* pAnnot,
 }
 
 FX_BOOL CPDFSDK_XFAAnnotHandler::CanAnswer(CPDFSDK_Annot* pAnnot) {
-  return pAnnot->GetXFAWidget() != NULL;
+  return !!pAnnot->GetXFAWidget();
 }
 
 void CPDFSDK_XFAAnnotHandler::OnDraw(CPDFSDK_PageView* pPageView,
@@ -744,8 +744,8 @@ void CPDFSDK_XFAAnnotHandler::OnDraw(CPDFSDK_PageView* pPageView,
                                      CFX_RenderDevice* pDevice,
                                      CFX_Matrix* pUser2Device,
                                      uint32_t dwFlags) {
-  ASSERT(pPageView != NULL);
-  ASSERT(pAnnot != NULL);
+  ASSERT(pPageView);
+  ASSERT(pAnnot);
 
   CPDFSDK_Document* pSDKDoc = pPageView->GetSDKDocument();
   CXFA_FFWidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
@@ -982,7 +982,7 @@ FX_BOOL CPDFSDK_XFAAnnotHandler::OnKillFocus(CPDFSDK_Annot* pAnnot,
 
 FX_BOOL CPDFSDK_XFAAnnotHandler::OnXFAChangedFocus(CPDFSDK_Annot* pOldAnnot,
                                                    CPDFSDK_Annot* pNewAnnot) {
-  CXFA_FFWidgetHandler* pWidgetHandler = NULL;
+  CXFA_FFWidgetHandler* pWidgetHandler = nullptr;
 
   if (pOldAnnot)
     pWidgetHandler = GetXFAWidgetHandler(pOldAnnot);
@@ -991,7 +991,7 @@ FX_BOOL CPDFSDK_XFAAnnotHandler::OnXFAChangedFocus(CPDFSDK_Annot* pOldAnnot,
 
   if (pWidgetHandler) {
     FX_BOOL bRet = TRUE;
-    CXFA_FFWidget* hWidget = pNewAnnot ? pNewAnnot->GetXFAWidget() : NULL;
+    CXFA_FFWidget* hWidget = pNewAnnot ? pNewAnnot->GetXFAWidget() : nullptr;
     if (hWidget) {
       CXFA_FFPageView* pXFAPageView = hWidget->GetPageView();
       if (pXFAPageView) {
@@ -1009,23 +1009,23 @@ FX_BOOL CPDFSDK_XFAAnnotHandler::OnXFAChangedFocus(CPDFSDK_Annot* pOldAnnot,
 CXFA_FFWidgetHandler* CPDFSDK_XFAAnnotHandler::GetXFAWidgetHandler(
     CPDFSDK_Annot* pAnnot) {
   if (!pAnnot)
-    return NULL;
+    return nullptr;
 
   CPDFSDK_PageView* pPageView = pAnnot->GetPageView();
   if (!pPageView)
-    return NULL;
+    return nullptr;
 
   CPDFSDK_Document* pSDKDoc = pPageView->GetSDKDocument();
   if (!pSDKDoc)
-    return NULL;
+    return nullptr;
 
   CPDFXFA_Document* pDoc = pSDKDoc->GetXFADocument();
   if (!pDoc)
-    return NULL;
+    return nullptr;
 
   CXFA_FFDocView* pDocView = pDoc->GetXFADocView();
   if (!pDocView)
-    return NULL;
+    return nullptr;
 
   return pDocView->GetWidgetHandler();
 }