Do not check pointers before deleting them.

xfa/fde/css/fde_cssstyleselector.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 XFA_FDE_CSS_FDE_CSSSTYLESELECTOR_H_
 #define XFA_FDE_CSS_FDE_CSSSTYLESELECTOR_H_
 
 #include <vector>
@@ skipping 380 matching lines @@
       : m_dwRefCount(1), m_pAllocator(pAlloc) {}
 
   ~CFDE_CSSComputedStyle() {}
 
   // IFX_Unknown:
   uint32_t AddRef() override { return ++m_dwRefCount; }
 
   uint32_t Release() override {
     uint32_t dwRefCount = --m_dwRefCount;
     if (dwRefCount == 0) {
-      if (m_NonInheritedData.m_pCounterStyle)
-        delete m_NonInheritedData.m_pCounterStyle;
-
+      delete m_NonInheritedData.m_pCounterStyle;
       FXTARGET_DeleteWith(CFDE_CSSComputedStyle, m_pAllocator, this);
     }
     return dwRefCount;
   }
 
   // IFDE_CSSComputedStyle:
   void Reset() override {
     m_InheritedData.Reset();
     m_NonInheritedData.Reset();
   }
@@ skipping 168 matching lines @@
   }
 
   uint32_t m_dwRefCount;
   IFX_MEMAllocator* m_pAllocator;
   CFDE_CSSInheritedData m_InheritedData;
   CFDE_CSSNonInheritedData m_NonInheritedData;
   CFX_WideStringArray m_CustomProperties;
 };
 
 #endif  // XFA_FDE_CSS_FDE_CSSSTYLESELECTOR_H_