Don't bother checking pointers before delete[] and FX_Free().

core/include/fxcrt/fx_basic.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_INCLUDE_FXCRT_FX_BASIC_H_
 #define CORE_INCLUDE_FXCRT_FX_BASIC_H_
 
 #include "fx_memory.h"
@@ skipping 547 matching lines @@
  public:
   CFX_FixedBufGrow() : m_pData(NULL) {}
   CFX_FixedBufGrow(int data_size) : m_pData(NULL) {
     if (data_size > FixedSize) {
       m_pData = FX_Alloc(DataType, data_size);
     } else {
       FXSYS_memset(m_Data, 0, sizeof(DataType) * FixedSize);
     }
   }
   void SetDataSize(int data_size) {
-    if (m_pData) {
-      FX_Free(m_pData);
-    }
+    FX_Free(m_pData);
     m_pData = NULL;
     if (data_size > FixedSize) {
       m_pData = FX_Alloc(DataType, data_size);
     } else {
       FXSYS_memset(m_Data, 0, sizeof(DataType) * FixedSize);
     }
   }
-  ~CFX_FixedBufGrow() {
-    if (m_pData) {
-      FX_Free(m_pData);
-    }
-  }
+  ~CFX_FixedBufGrow() { FX_Free(m_pData); }
   operator DataType*() { return m_pData ? m_pData : m_Data; }
 
  private:
   DataType m_Data[FixedSize];
   DataType* m_pData;
 };
 class CFX_MapPtrToPtr {
  protected:
   struct CAssoc {
     CAssoc* pNext;
@@ skipping 478 matching lines @@
   };
 
  public:
   CFX_SortListArray() : m_CurList(0) {}
 
   ~CFX_SortListArray() { Clear(); }
 
   void Clear() {
     for (int32_t i = m_DataLists.GetUpperBound(); i >= 0; i--) {
       DataList list = m_DataLists.ElementAt(i);
-      if (list.data) {
-        FX_Free(list.data);
-      }
+      FX_Free(list.data);
     }
     m_DataLists.RemoveAll();
     m_CurList = 0;
   }
 
   void Append(int32_t nStart, int32_t nCount) {
     if (nStart < 0) {
       return;
     }
     while (nCount > 0) {
@@ skipping 147 matching lines @@
   FX_FLOAT c;
   FX_FLOAT d;
   FX_FLOAT e;
   FX_FLOAT f;
   FX_FLOAT g;
   FX_FLOAT h;
   FX_FLOAT i;
 };
 
 #endif  // CORE_INCLUDE_FXCRT_FX_BASIC_H_