Get rid of most instance of 'foo != NULL'

fpdfsdk/src/formfiller/FFL_ListBox.cpp

Index: fpdfsdk/src/formfiller/FFL_ListBox.cpp
diff --git a/fpdfsdk/src/formfiller/FFL_ListBox.cpp b/fpdfsdk/src/formfiller/FFL_ListBox.cpp
index 53a7570716b3b487d2d53a536ec0b9a3aa22decd..d00bfb12ff2b15be2d8e2c0e336e67329397ada1 100644
--- a/fpdfsdk/src/formfiller/FFL_ListBox.cpp
+++ b/fpdfsdk/src/formfiller/FFL_ListBox.cpp
@@ -25,7 +25,6 @@ CFFL_ListBox::~CFFL_ListBox() {
 PWL_CREATEPARAM CFFL_ListBox::GetCreateParam() {
   PWL_CREATEPARAM cp = CFFL_FormFiller::GetCreateParam();
 
-  ASSERT(m_pWidget != NULL);
   FX_DWORD dwFieldFlag = m_pWidget->GetFieldFlags();
 
   if (dwFieldFlag & FIELDFLAG_MULTISELECT) {
@@ -52,7 +51,6 @@ CPWL_Wnd* CFFL_ListBox::NewPDFWindow(const PWL_CREATEPARAM& cp,
   pWnd->AttachFFLData(this);
   pWnd->Create(cp);
 
-  ASSERT(m_pApp != NULL);
   CFFL_IFormFiller* pIFormFiller = m_pApp->GetIFormFiller();
   pWnd->SetFillerNotify(pIFormFiller);
 
@@ -115,7 +113,7 @@ FX_BOOL CFFL_ListBox::IsDataChanged(CPDFSDK_PageView* pPageView) {
 }
 
 void CFFL_ListBox::SaveData(CPDFSDK_PageView* pPageView) {
-  ASSERT(m_pWidget != NULL);
+  ASSERT(m_pWidget);
 
   if (CPWL_ListBox* pListBox = (CPWL_ListBox*)GetPDFWindow(pPageView, FALSE)) {
     CFX_IntArray aOldSelect, aNewSelect;
@@ -161,7 +159,6 @@ void CFFL_ListBox::GetActionData(CPDFSDK_PageView* pPageView,
       } else {
         if (CPWL_ListBox* pListBox =
                 (CPWL_ListBox*)GetPDFWindow(pPageView, FALSE)) {
-          ASSERT(m_pWidget != NULL);
           int32_t nCurSel = pListBox->GetCurSel();
           if (nCurSel >= 0)
             fa.sValue = m_pWidget->GetOptionLabel(nCurSel);
@@ -173,7 +170,6 @@ void CFFL_ListBox::GetActionData(CPDFSDK_PageView* pPageView,
       if (m_pWidget->GetFieldFlags() & FIELDFLAG_MULTISELECT) {
         fa.sValue = L"";
       } else {
-        ASSERT(m_pWidget != NULL);
         int32_t nCurSel = m_pWidget->GetSelectedIndex(0);
         if (nCurSel >= 0)
           fa.sValue = m_pWidget->GetOptionLabel(nCurSel);
@@ -189,7 +185,7 @@ void CFFL_ListBox::SetActionData(CPDFSDK_PageView* pPageView,
                                  const PDFSDK_FieldAction& fa) {}
 
 void CFFL_ListBox::SaveState(CPDFSDK_PageView* pPageView) {
-  ASSERT(pPageView != NULL);
+  ASSERT(pPageView);
 
   if (CPWL_ListBox* pListBox = (CPWL_ListBox*)GetPDFWindow(pPageView, FALSE)) {
     for (int32_t i = 0, sz = pListBox->GetCount(); i < sz; i++) {