Do not check pointers before deleting them.

XFA edition.

Review-Url: https://codereview.chromium.org/1925363002

10 files changed, 66 insertions, 89 deletions

diff --git a/xfa/fwl/basewidget/fwl_caretimp.cpp b/xfa/fwl/basewidget/fwl_caretimp.cpp
index 3cb2ed60f7..c61c459f2e 100644
--- a/xfa/fwl/basewidget/fwl_caretimp.cpp
+++ b/xfa/fwl/basewidget/fwl_caretimp.cpp
@@ -44,12 +44,11 @@ CFWL_CaretImp::CFWL_CaretImp(const CFWL_WidgetImpProperties& properties,
   m_pTimer = new CFWL_CaretTimer(this);
   SetStates(FWL_STATE_CAT_HightLight);
 }
+
 CFWL_CaretImp::~CFWL_CaretImp() {
-  if (m_pTimer) {
-    delete m_pTimer;
-    m_pTimer = NULL;
-  }
+  delete m_pTimer;
 }
+
 FWL_ERR CFWL_CaretImp::GetClassName(CFX_WideString& wsClass) const {
   wsClass = FWL_CLASS_Caret;
   return FWL_ERR_Succeeded;
diff --git a/xfa/fwl/basewidget/fxmath_barcodeimp.cpp b/xfa/fwl/basewidget/fxmath_barcodeimp.cpp
index 5ca0927671..5efd1621c8 100644
--- a/xfa/fwl/basewidget/fxmath_barcodeimp.cpp
+++ b/xfa/fwl/basewidget/fxmath_barcodeimp.cpp
@@ -46,13 +46,13 @@ static CBC_CodeBase* FX_Barcode_CreateBarCodeEngineObject(BC_TYPE type) {
       return NULL;
   }
 }
+
 CFX_Barcode::CFX_Barcode() {}
+
 CFX_Barcode::~CFX_Barcode() {
-  if (m_pBCEngine) {
-    delete m_pBCEngine;
-    m_pBCEngine = NULL;
-  }
+  delete m_pBCEngine;
 }
+
 FX_BOOL CFX_Barcode::Create(BC_TYPE type) {
   m_pBCEngine = FX_Barcode_CreateBarCodeEngineObject(type);
   return m_pBCEngine != NULL;
diff --git a/xfa/fwl/core/fwl_formimp.cpp b/xfa/fwl/core/fwl_formimp.cpp
index 815aca974c..2fd85a8d0e 100644
--- a/xfa/fwl/core/fwl_formimp.cpp
+++ b/xfa/fwl/core/fwl_formimp.cpp
@@ -471,25 +471,19 @@ void CFWL_FormImp::ShowChildWidget(IFWL_Widget* pParent) {
     pChild = pWidgetMgr->GetWidget(pChild, FWL_WGTRELATION_NextSibling);
   }
 }
+
 void CFWL_FormImp::RemoveSysButtons() {
   m_rtCaption.Reset();
-  if (m_pCloseBox) {
-    delete m_pCloseBox;
-    m_pCloseBox = NULL;
-  }
-  if (m_pMinBox) {
-    delete m_pMinBox;
-    m_pMinBox = NULL;
-  }
-  if (m_pMaxBox) {
-    delete m_pMaxBox;
-    m_pMaxBox = NULL;
-  }
-  if (m_pCaptionBox) {
-    delete m_pCaptionBox;
-    m_pCaptionBox = NULL;
-  }
+  delete m_pCloseBox;
+  m_pCloseBox = nullptr;
+  delete m_pMinBox;
+  m_pMinBox = nullptr;
+  delete m_pMaxBox;
+  m_pMaxBox = nullptr;
+  delete m_pCaptionBox;
+  m_pCaptionBox = nullptr;
 }
+
 void CFWL_FormImp::CalcContentRect(CFX_RectF& rtContent) {
 #ifdef FWL_UseMacSystemBorder
   rtContent = m_rtRelative;
diff --git a/xfa/fwl/core/fwl_noteimp.cpp b/xfa/fwl/core/fwl_noteimp.cpp
index 267b2ca2ee..39afa783c0 100644
--- a/xfa/fwl/core/fwl_noteimp.cpp
+++ b/xfa/fwl/core/fwl_noteimp.cpp
@@ -870,20 +870,20 @@ CFWL_ToolTipContainer::~CFWL_ToolTipContainer() {
   }
   delete m_ToolTipDp;
 }
+
 // static
 CFWL_ToolTipContainer* CFWL_ToolTipContainer::getInstance() {
-  if (!s_pInstance) {
+  if (!s_pInstance)
     s_pInstance = new CFWL_ToolTipContainer;
-  }
   return s_pInstance;
 }
+
 // static
 void CFWL_ToolTipContainer::DeleteInstance() {
-  if (s_pInstance) {
-    delete s_pInstance;
-    s_pInstance = NULL;
-  }
+  delete s_pInstance;
+  s_pInstance = NULL;
 }
+
 FX_ERR CFWL_ToolTipContainer::AddToolTipTarget(IFWL_ToolTipTarget* pTarget) {
   if (m_arrWidget.Find(pTarget) < 0) {
     m_arrWidget.Add(pTarget);
diff --git a/xfa/fwl/core/fwl_widgetmgrimp.cpp b/xfa/fwl/core/fwl_widgetmgrimp.cpp
index b1e0ca822a..0ce452edb0 100644
--- a/xfa/fwl/core/fwl_widgetmgrimp.cpp
+++ b/xfa/fwl/core/fwl_widgetmgrimp.cpp
@@ -39,6 +39,7 @@ CFWL_WidgetMgr::CFWL_WidgetMgr(IFWL_AdapterNative* pAdapterNative)
   m_rtScreen.Reset();
 #endif
 }
+
 CFWL_WidgetMgr::~CFWL_WidgetMgr() {
   FX_POSITION ps = m_mapWidgetItem.GetStartPosition();
   while (ps) {
@@ -48,11 +49,9 @@ CFWL_WidgetMgr::~CFWL_WidgetMgr() {
     delete pItem;
   }
   m_mapWidgetItem.RemoveAll();
-  if (m_pDelegate) {
-    delete m_pDelegate;
-    m_pDelegate = NULL;
-  }
+  delete m_pDelegate;
 }
+
 int32_t CFWL_WidgetMgr::CountWidgets(IFWL_Widget* pParent) {
   CFWL_WidgetMgrItem* pParentItem = GetWidgetMgrItem(pParent);
   return TravelWidgetMgr(pParentItem, NULL, NULL);
@@ -480,18 +479,18 @@ IFWL_Widget* CFWL_WidgetMgr::GetWidgetAtPoint(IFWL_Widget* parent,
   }
   return parent;
 }
+
 void CFWL_WidgetMgr::NotifySizeChanged(IFWL_Widget* pForm,
                                        FX_FLOAT fx,
                                        FX_FLOAT fy) {
-  if (!FWL_UseOffscreen(pForm)) {
+  if (!FWL_UseOffscreen(pForm))
     return;
-  }
+
   CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pForm);
-  if (pItem->pOffscreen) {
-    delete pItem->pOffscreen;
-    pItem->pOffscreen = NULL;
-  }
+  delete pItem->pOffscreen;
+  pItem->pOffscreen = nullptr;
 }
+
 IFWL_Widget* CFWL_WidgetMgr::nextTab(IFWL_Widget* parent,
                                      IFWL_Widget* focus,
                                      FX_BOOL& bFind) {
diff --git a/xfa/fwl/theme/cfwl_checkboxtp.cpp b/xfa/fwl/theme/cfwl_checkboxtp.cpp
index ccde660693..ac94c80d6d 100644
--- a/xfa/fwl/theme/cfwl_checkboxtp.cpp
+++ b/xfa/fwl/theme/cfwl_checkboxtp.cpp
@@ -22,21 +22,19 @@
 #define CHECKBOX_COLOR_BOXRB1 (ArgbEncode(255, 241, 239, 226))
 #define CHECKBOX_COLOR_BOXRB2 (ArgbEncode(255, 255, 255, 255))
 
-CFWL_CheckBoxTP::CFWL_CheckBoxTP() : m_pCheckPath(NULL) {
-  m_pThemeData = new CKBThemeData;
+CFWL_CheckBoxTP::CFWL_CheckBoxTP()
+    : m_pThemeData(new CKBThemeData), m_pCheckPath(nullptr) {
   SetThemeData(0);
 }
+
 CFWL_CheckBoxTP::~CFWL_CheckBoxTP() {
-  if (m_pThemeData) {
-    delete m_pThemeData;
-    m_pThemeData = NULL;
-  }
+  delete m_pThemeData;
   if (m_pCheckPath) {
     m_pCheckPath->Clear();
     delete m_pCheckPath;
-    m_pCheckPath = NULL;
   }
 }
+
 FX_BOOL CFWL_CheckBoxTP::IsValidWidget(IFWL_Widget* pWidget) {
   return pWidget && pWidget->GetClassID() == FWL_CLASSHASH_CheckBox;
 }
diff --git a/xfa/fwl/theme/cfwl_formtp.cpp b/xfa/fwl/theme/cfwl_formtp.cpp
index ec06f4ad24..4a18ea0cc4 100644
--- a/xfa/fwl/theme/cfwl_formtp.cpp
+++ b/xfa/fwl/theme/cfwl_formtp.cpp
@@ -35,30 +35,27 @@ CFWL_FormTP::CFWL_FormTP() : m_pActiveBitmap(NULL), m_pDeactivebitmap(NULL) {
   m_rtDisBBorder.Reset();
   m_rtDisCaption.Reset();
 }
+
 CFWL_FormTP::~CFWL_FormTP() {
-  if (m_pThemeData) {
-    delete m_pThemeData;
-    m_pThemeData = NULL;
-  }
+  delete m_pThemeData;
 }
+
 FWL_ERR CFWL_FormTP::Initialize() {
   InitTTO();
   InitCaption(TRUE);
   InitCaption(FALSE);
   return CFWL_WidgetTP::Initialize();
 }
+
 FWL_ERR CFWL_FormTP::Finalize() {
   FinalizeTTO();
-  if (m_pActiveBitmap) {
-    delete m_pActiveBitmap;
-    m_pActiveBitmap = NULL;
-  }
-  if (m_pDeactivebitmap) {
-    delete m_pDeactivebitmap;
-    m_pDeactivebitmap = NULL;
-  }
+  delete m_pActiveBitmap;
+  m_pActiveBitmap = nullptr;
+  delete m_pDeactivebitmap;
+  m_pDeactivebitmap = nullptr;
   return CFWL_WidgetTP::Finalize();
 }
+
 FX_BOOL CFWL_FormTP::IsValidWidget(IFWL_Widget* pWidget) {
   if (!pWidget)
     return FALSE;
@@ -850,10 +847,7 @@ void CFWL_FormTP::InitCaption(FX_BOOL bActive) {
     CFX_Graphics gs;
     CFX_Path path;
     path.Create();
-    if (m_pActiveBitmap) {
-      delete m_pActiveBitmap;
-      m_pActiveBitmap = NULL;
-    }
+    delete m_pActiveBitmap;
     m_pActiveBitmap = new CFX_DIBitmap;
     m_pActiveBitmap->Create(1, FWLTHEME_CAPACITY_CYCaption, FXDIB_Argb);
     dev.Attach(m_pActiveBitmap);
@@ -875,10 +869,7 @@ void CFWL_FormTP::InitCaption(FX_BOOL bActive) {
     CFX_Graphics gs;
     CFX_Path path;
     path.Create();
-    if (m_pDeactivebitmap) {
-      delete m_pDeactivebitmap;
-      m_pDeactivebitmap = NULL;
-    }
+    delete m_pDeactivebitmap;
     m_pDeactivebitmap = new CFX_DIBitmap;
     m_pDeactivebitmap->Create(1, FWLTHEME_CAPACITY_CYCaption, FXDIB_Argb);
     dev.Attach(m_pDeactivebitmap);
diff --git a/xfa/fwl/theme/cfwl_pushbuttontp.cpp b/xfa/fwl/theme/cfwl_pushbuttontp.cpp
index 5662ac09c2..780c580369 100644
--- a/xfa/fwl/theme/cfwl_pushbuttontp.cpp
+++ b/xfa/fwl/theme/cfwl_pushbuttontp.cpp
@@ -15,15 +15,14 @@
 
 #define PUSHBUTTON_SIZE_Corner 2
 
-CFWL_PushButtonTP::CFWL_PushButtonTP() {
-  m_pThemeData = new PBThemeData;
+CFWL_PushButtonTP::CFWL_PushButtonTP() : m_pThemeData(new PBThemeData) {
   SetThemeData(0);
 }
+
 CFWL_PushButtonTP::~CFWL_PushButtonTP() {
-  if (m_pThemeData) {
-    delete m_pThemeData;
-  }
+  delete m_pThemeData;
 }
+
 FX_BOOL CFWL_PushButtonTP::IsValidWidget(IFWL_Widget* pWidget) {
   return pWidget->GetClassID() == FWL_CLASSHASH_PushButton;
 }
diff --git a/xfa/fwl/theme/cfwl_scrollbartp.cpp b/xfa/fwl/theme/cfwl_scrollbartp.cpp
index 11326edf59..0913a8daa2 100644
--- a/xfa/fwl/theme/cfwl_scrollbartp.cpp
+++ b/xfa/fwl/theme/cfwl_scrollbartp.cpp
@@ -15,16 +15,14 @@
 
 #define FWL_SCROLL_PawLen 12.5f
 
-CFWL_ScrollBarTP::CFWL_ScrollBarTP() {
-  m_pThemeData = new SBThemeData;
+CFWL_ScrollBarTP::CFWL_ScrollBarTP() : m_pThemeData(new SBThemeData) {
   SetThemeData(0);
 }
+
 CFWL_ScrollBarTP::~CFWL_ScrollBarTP() {
-  if (m_pThemeData) {
-    delete m_pThemeData;
-    m_pThemeData = NULL;
-  }
+  delete m_pThemeData;
 }
+
 FX_BOOL CFWL_ScrollBarTP::IsValidWidget(IFWL_Widget* pWidget) {
   if (!pWidget)
     return FALSE;
diff --git a/xfa/fwl/theme/cfwl_widgettp.cpp b/xfa/fwl/theme/cfwl_widgettp.cpp
index 7f4e547e24..1ff241636f 100644
--- a/xfa/fwl/theme/cfwl_widgettp.cpp
+++ b/xfa/fwl/theme/cfwl_widgettp.cpp
@@ -741,27 +741,26 @@ uint32_t FWL_GetThemeColor(uint32_t dwThemeID) {
 }
 
 CFWL_ArrowData* CFWL_ArrowData::m_pInstance = NULL;
+
 CFWL_ArrowData* CFWL_ArrowData::GetInstance() {
-  if (!m_pInstance) {
+  if (!m_pInstance)
     m_pInstance = new CFWL_ArrowData;
-  }
   return m_pInstance;
 }
+
 FX_BOOL CFWL_ArrowData::IsInstance() {
-  return (m_pInstance != NULL);
+  return !!m_pInstance;
 }
+
 void CFWL_ArrowData::DestroyInstance() {
-  if (m_pInstance) {
-    delete m_pInstance;
-    m_pInstance = NULL;
-  }
+  delete m_pInstance;
+  m_pInstance = nullptr;
 }
+
 CFWL_ArrowData::~CFWL_ArrowData() {
-  if (m_pColorData) {
-    delete m_pColorData;
-    m_pColorData = NULL;
-  }
+  delete m_pColorData;
 }
+
 void CFWL_ArrowData::SetColorData(uint32_t dwID) {
   if (!m_pColorData) {
     m_pColorData = new CColorData;