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

fpdfsdk/src/formfiller/FFL_RadioButton.cpp

Index: fpdfsdk/src/formfiller/FFL_RadioButton.cpp
diff --git a/fpdfsdk/src/formfiller/FFL_RadioButton.cpp b/fpdfsdk/src/formfiller/FFL_RadioButton.cpp
index 572cfeb29ab21dc351f5de8b59c13f7364f5605c..609e0430249714e048d50b2fb22b848662017c25 100644
--- a/fpdfsdk/src/formfiller/FFL_RadioButton.cpp
+++ b/fpdfsdk/src/formfiller/FFL_RadioButton.cpp
@@ -22,7 +22,6 @@ CPWL_Wnd* CFFL_RadioButton::NewPDFWindow(const PWL_CREATEPARAM& cp,
   CPWL_RadioButton* pWnd = new CPWL_RadioButton();
   pWnd->Create(cp);
 
-  ASSERT(m_pWidget != NULL);
   pWnd->SetCheck(m_pWidget->IsChecked());
 
   return pWnd;
@@ -47,10 +46,8 @@ FX_BOOL CFFL_RadioButton::OnChar(CPDFSDK_Annot* pAnnot,
     case FWL_VKEY_Return:
     case FWL_VKEY_Space: {
       CFFL_IFormFiller* pIFormFiller = m_pApp->GetIFormFiller();
-      ASSERT(pIFormFiller != NULL);
-
       CPDFSDK_PageView* pPageView = pAnnot->GetPageView();
-      ASSERT(pPageView != NULL);
+      ASSERT(pPageView);
 
       FX_BOOL bReset = FALSE;
       FX_BOOL bExit = FALSE;
@@ -94,8 +91,6 @@ FX_BOOL CFFL_RadioButton::OnLButtonUp(CPDFSDK_PageView* pPageView,
 }
 
 FX_BOOL CFFL_RadioButton::IsDataChanged(CPDFSDK_PageView* pPageView) {
-  ASSERT(m_pWidget != NULL);
-
   if (CPWL_RadioButton* pWnd =
           (CPWL_RadioButton*)GetPDFWindow(pPageView, FALSE)) {
     return pWnd->IsChecked() != m_pWidget->IsChecked();
@@ -105,16 +100,12 @@ FX_BOOL CFFL_RadioButton::IsDataChanged(CPDFSDK_PageView* pPageView) {
 }
 
 void CFFL_RadioButton::SaveData(CPDFSDK_PageView* pPageView) {
-  ASSERT(m_pWidget != NULL);
-
   if (CPWL_RadioButton* pWnd =
           (CPWL_RadioButton*)GetPDFWindow(pPageView, FALSE)) {
     FX_BOOL bNewChecked = pWnd->IsChecked();
 
     if (bNewChecked) {
       CPDF_FormField* pField = m_pWidget->GetFormField();
-      ASSERT(pField != NULL);
-
       for (int32_t i = 0, sz = pField->CountControls(); i < sz; i++) {
         if (CPDF_FormControl* pCtrl = pField->GetControl(i)) {
           if (pCtrl->IsChecked()) {