Remove custom memory manager

core/src/fxcodec/codec/fx_codec.cpp

Index: core/src/fxcodec/codec/fx_codec.cpp
diff --git a/core/src/fxcodec/codec/fx_codec.cpp b/core/src/fxcodec/codec/fx_codec.cpp
index c6b3ccee43c50ab94efd459a13c7aca0189914de..456ec40fea092c50b20c2a78765ce39d5ed58f84 100644
--- a/core/src/fxcodec/codec/fx_codec.cpp
+++ b/core/src/fxcodec/codec/fx_codec.cpp
@@ -1,7 +1,7 @@
 // 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"
@@ -119,8 +119,7 @@ void CCodec_ScanlineDecoder::DownScale(int dest_width, int dest_height)
         FX_Free(m_pDataCache);
         m_pDataCache = NULL;
     }
-    m_pDataCache = (CCodec_ImageDataCache*)FXMEM_DefaultAlloc(
-                       sizeof(CCodec_ImageDataCache) + m_Pitch * m_OutputHeight, FXMEM_NONLEAVE);
+    m_pDataCache = (CCodec_ImageDataCache*)FX_AllocNL(FX_BYTE, sizeof(CCodec_ImageDataCache) + m_Pitch * m_OutputHeight);
     if (m_pDataCache == NULL) {
         return;
     }
@@ -337,7 +336,6 @@ FX_BOOL CCodec_RLScanlineDecoder::Create(FX_LPCBYTE src_buf, FX_DWORD src_size,
     if (m_pScanline == NULL) {
         return FALSE;
     }
-    FXSYS_memset32(m_pScanline, 0, m_Pitch);
     return CheckDestSize();
 }
 FX_BOOL CCodec_RLScanlineDecoder::v_Rewind()