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

core/src/fxcodec/codec/fx_codec_jbig.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 "../../../include/fxcodec/fx_codec.h"
 #include "codec_int.h"
 
 CCodec_Jbig2Context::CCodec_Jbig2Context() {
@@ skipping 64 matching lines @@
   }
   width = (FX_DWORD)dest_image->m_nWidth;
   height = (FX_DWORD)dest_image->m_nHeight;
   pitch = (FX_DWORD)dest_image->m_nStride;
   dest_buf = dest_image->m_pData;
   dest_image->m_bNeedFree = FALSE;
   delete dest_image;
   FX_Free(src_buf);
   return TRUE;
 failed:
-  if (src_buf) {
     FX_Free(src_buf);
-  }
   return FALSE;
 }
 FXCODEC_STATUS CCodec_Jbig2Module::StartDecode(void* pJbig2Context,
                                                FX_DWORD width,
                                                FX_DWORD height,
                                                const uint8_t* src_buf,
                                                FX_DWORD src_size,
                                                const uint8_t* global_data,
                                                FX_DWORD global_size,
                                                uint8_t* dest_buf,
@@ skipping 83 matching lines @@
   }
   width = (FX_DWORD)m_pJbig2Context->m_dest_image->m_nWidth;
   height = (FX_DWORD)m_pJbig2Context->m_dest_image->m_nHeight;
   pitch = (FX_DWORD)m_pJbig2Context->m_dest_image->m_nStride;
   dest_buf = m_pJbig2Context->m_dest_image->m_pData;
   m_pJbig2Context->m_dest_image->m_bNeedFree = FALSE;
   delete m_pJbig2Context->m_dest_image;
   FX_Free(m_pJbig2Context->m_src_buf);
   return FXCODEC_STATUS_DECODE_FINISH;
 failed:
-  if (m_pJbig2Context->m_src_buf) {
     FX_Free(m_pJbig2Context->m_src_buf);
-  }
   m_pJbig2Context->m_src_buf = NULL;
   return FXCODEC_STATUS_ERROR;
 }
 FXCODEC_STATUS CCodec_Jbig2Module::ContinueDecode(void* pJbig2Context,
                                                   IFX_Pause* pPause) {
   CCodec_Jbig2Context* m_pJbig2Context = (CCodec_Jbig2Context*)pJbig2Context;
   int ret = m_pJbig2Context->m_pContext->Continue(pPause);
   if (m_pJbig2Context->m_pContext->GetProcessiveStatus() !=
       FXCODEC_STATUS_DECODE_FINISH) {
     return m_pJbig2Context->m_pContext->GetProcessiveStatus();
   }
   if (m_pJbig2Context->m_bFileReader) {
     CJBig2_Context::DestroyContext(m_pJbig2Context->m_pContext);
     m_pJbig2Context->m_pContext = NULL;
     if (ret != JBIG2_SUCCESS) {
-      if (m_pJbig2Context->m_src_buf) {
         FX_Free(m_pJbig2Context->m_src_buf);
-      }
       m_pJbig2Context->m_src_buf = NULL;
       return FXCODEC_STATUS_ERROR;
     }
     delete m_pJbig2Context->m_dest_image;
     FX_Free(m_pJbig2Context->m_src_buf);
     return FXCODEC_STATUS_DECODE_FINISH;
   }
   CJBig2_Context::DestroyContext(m_pJbig2Context->m_pContext);
   m_pJbig2Context->m_pContext = NULL;
   if (ret != JBIG2_SUCCESS) {
     return FXCODEC_STATUS_ERROR;
   }
   int dword_size =
       m_pJbig2Context->m_height * m_pJbig2Context->m_dest_pitch / 4;
   FX_DWORD* dword_buf = (FX_DWORD*)m_pJbig2Context->m_dest_buf;
   for (int i = 0; i < dword_size; i++) {
     dword_buf[i] = ~dword_buf[i];
   }
   return FXCODEC_STATUS_DECODE_FINISH;
 }