Fix leak in CPDF_StreamContentParser::AddTextObject().

core/fxcrt/include/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_FXCRT_INCLUDE_FX_BASIC_H_
 #define CORE_FXCRT_INCLUDE_FX_BASIC_H_
 
 #include <algorithm>
@@ skipping 699 matching lines @@
 
   CFX_CountRef() { m_pObject = NULL; }
 
   CFX_CountRef(const Ref& ref) {
     m_pObject = ref.m_pObject;
     if (m_pObject) {
       m_pObject->m_RefCount++;
     }
   }
 
-  ~CFX_CountRef() {
-    if (!m_pObject) {
-      return;
-    }
-    m_pObject->m_RefCount--;
-    if (m_pObject->m_RefCount <= 0) {
-      delete m_pObject;
-    }
-  }
+  ~CFX_CountRef() { SetNull(); }
 
   ObjClass* New() {
-    if (m_pObject) {
-      m_pObject->m_RefCount--;
-      if (m_pObject->m_RefCount <= 0) {
-        delete m_pObject;
-      }
-    }
+    SetNull();
     m_pObject = new CountedObj;
     m_pObject->m_RefCount = 1;
     return m_pObject;
   }
 
   void operator=(const Ref& ref) {
-    if (ref.m_pObject) {
+    if (ref.m_pObject)
       ref.m_pObject->m_RefCount++;
-    }
-    if (m_pObject) {
-      m_pObject->m_RefCount--;
-      if (m_pObject->m_RefCount <= 0) {
-        delete m_pObject;
-      }
-    }
+    SetNull();
     m_pObject = ref.m_pObject;
   }
 
-  void operator=(void* p) {
-    ASSERT(p == 0);
-    if (!m_pObject) {
-      return;
-    }
-    m_pObject->m_RefCount--;
-    if (m_pObject->m_RefCount <= 0) {
-      delete m_pObject;
-    }
-    m_pObject = NULL;
-  }
-
   const ObjClass* GetObject() const { return m_pObject; }
 
   operator const ObjClass*() const { return m_pObject; }
 
   FX_BOOL IsNull() const { return !m_pObject; }
 
   FX_BOOL NotNull() const { return !IsNull(); }
 
   ObjClass* GetModify() {
     if (!m_pObject) {
@@ skipping 220 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_FXCRT_INCLUDE_FX_BASIC_H_