Cleanup: Do not check pointers before deleting them.

core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp

 // 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
 
 #include <limits.h>
 
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fpdfapi/fpdf_page.h"
@@ skipping 442 matching lines @@
     CPDF_StreamAcc*     m_pSampleStream;
 };
 CPDF_SampledFunc::CPDF_SampledFunc()
 {
     m_pSampleStream = NULL;
     m_pEncodeInfo = NULL;
     m_pDecodeInfo = NULL;
 }
 CPDF_SampledFunc::~CPDF_SampledFunc()
 {
-    if (m_pSampleStream) {
-        delete m_pSampleStream;
-    }
+    delete m_pSampleStream;
     if (m_pEncodeInfo) {
         FX_Free(m_pEncodeInfo);
     }
     if (m_pDecodeInfo) {
         FX_Free(m_pDecodeInfo);
     }
 }
 FX_BOOL CPDF_SampledFunc::v_Init(CPDF_Object* pObj)
 {
     if (pObj->GetType() != PDFOBJ_STREAM) {
@@ skipping 230 matching lines @@
 CPDF_StitchFunc::CPDF_StitchFunc()
 {
     m_nSubs = 0;
     m_pSubFunctions = NULL;
     m_pBounds = NULL;
     m_pEncode = NULL;
 }
 CPDF_StitchFunc::~CPDF_StitchFunc()
 {
     for (int i = 0; i < m_nSubs; i ++)
-        if (m_pSubFunctions[i]) {
-            delete m_pSubFunctions[i];
-        }
+        delete m_pSubFunctions[i];
     if (m_pSubFunctions) {
         FX_Free(m_pSubFunctions);
     }
     if (m_pBounds) {
         FX_Free(m_pBounds);
     }
     if (m_pEncode) {
         FX_Free(m_pEncode);
     }
 }
@@ skipping 167 matching lines @@
         for (int i = 0; i < m_nOutputs; i ++) {
             if (results[i] < m_pRanges[i * 2]) {
                 results[i] = m_pRanges[i * 2];
             } else if (results[i] > m_pRanges[i * 2 + 1]) {
                 results[i] = m_pRanges[i * 2 + 1];
             }
         }
     }
     return TRUE;
 }