Fix potentially massive memory leak in CPDF_DIBSource::LoadJpxBitmap().

core/src/fpdfapi/fpdf_render/render_int.h

Index: core/src/fpdfapi/fpdf_render/render_int.h
diff --git a/core/src/fpdfapi/fpdf_render/render_int.h b/core/src/fpdfapi/fpdf_render/render_int.h
index cf2074f5bdd37d4d4c574156b84b92624d356a99..529128e8f95b8af7dd2305120c72c1329df43f09 100644
--- a/core/src/fpdfapi/fpdf_render/render_int.h
+++ b/core/src/fpdfapi/fpdf_render/render_int.h
@@ -1,17 +1,18 @@
 // 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_SRC_FPDFAPI_FPDF_RENDER_RENDER_INT_H_
 #define CORE_SRC_FPDFAPI_FPDF_RENDER_RENDER_INT_H_
 
+#include "../../../../third_party/base/nonstd_unique_ptr.h"
 #include "../../../include/fpdfapi/fpdf_pageobj.h"
 
 class CPDF_QuickStretcher;
 #define TYPE3_MAX_BLUES		16
-class CPDF_Type3Glyphs 
+class CPDF_Type3Glyphs
 {
 public:
     CPDF_Type3Glyphs()
@@ -27,7 +28,7 @@ public:
     int						m_TopBlueCount, m_BottomBlueCount;
 };
 class CFX_GlyphBitmap;
-class CPDF_Type3Cache 
+class CPDF_Type3Cache
 {
 public:
     CPDF_Type3Cache(CPDF_Type3Font* pFont)
@@ -41,7 +42,7 @@ protected:
     CPDF_Type3Font*			m_pFont;
     CFX_MapByteStringToPtr	m_SizeMap;
 };
-class CPDF_TransferFunc 
+class CPDF_TransferFunc
 {
 public:
     CPDF_Document*	m_pPDFDoc;
@@ -53,7 +54,7 @@ public:
 };
 typedef CFX_MapPtrTemplate<CPDF_Font*, CPDF_CountedObject<CPDF_Type3Cache*>*> CPDF_Type3CacheMap;
 typedef CFX_MapPtrTemplate<CPDF_Object*, CPDF_CountedObject<CPDF_TransferFunc*>*> CPDF_TransferFuncMap;
-class CPDF_DocRenderData 
+class CPDF_DocRenderData
 {
 public:
     CPDF_DocRenderData(CPDF_Document* pPDFDoc = NULL);
@@ -80,7 +81,7 @@ public:
     CFX_AffineMatrix			m_Matrix;
 };
 typedef CFX_ArrayTemplate<_PDF_RenderItem>	CPDF_RenderLayer;
-class IPDF_ObjectRenderer 
+class IPDF_ObjectRenderer
 {
 public:
     static IPDF_ObjectRenderer* Create(int type);
@@ -89,7 +90,7 @@ public:
     virtual FX_BOOL Continue(IFX_Pause* pPause) = 0;
     FX_BOOL		m_Result;
 };
-class CPDF_RenderStatus 
+class CPDF_RenderStatus
 {
 public:
     CPDF_RenderStatus();
@@ -181,7 +182,7 @@ protected:
     FX_ARGB					m_T3FillColor;
     int                     m_curBlend;
 };
-class CPDF_ImageLoader 
+class CPDF_ImageLoader
 {
 public:
     CPDF_ImageLoader()
@@ -207,7 +208,7 @@ protected:
     FX_INT32                m_nDownsampleWidth;
     FX_INT32                m_nDownsampleHeight;
 };
-class CPDF_ProgressiveImageLoaderHandle 
+class CPDF_ProgressiveImageLoaderHandle
 {
 public:
     CPDF_ProgressiveImageLoaderHandle();
@@ -260,7 +261,7 @@ protected:
     FX_BOOL				DrawMaskedImage();
     FX_BOOL				DrawPatternImage(const CFX_Matrix* pObj2Device);
 };
-class CPDF_ScaledRenderBuffer 
+class CPDF_ScaledRenderBuffer
 {
 public:
     CPDF_ScaledRenderBuffer();
@@ -285,7 +286,7 @@ private:
     CFX_AffineMatrix	m_Matrix;
 };
 class ICodec_ScanlineDecoder;
-class CPDF_QuickStretcher 
+class CPDF_QuickStretcher
 {
 public:
     CPDF_QuickStretcher();
@@ -302,7 +303,7 @@ public:
     CPDF_StreamAcc m_StreamAcc;
     int			m_LineIndex;
 };
-class CPDF_DeviceBuffer 
+class CPDF_DeviceBuffer
 {
 public:
     CPDF_DeviceBuffer();
@@ -326,7 +327,7 @@ private:
     CFX_DIBitmap*		m_pBitmap;
     CFX_AffineMatrix	m_Matrix;
 };
-class CPDF_ImageCache 
+class CPDF_ImageCache
 {
 public:
     CPDF_ImageCache(CPDF_Document* pDoc, CPDF_Stream* pStream);
@@ -443,7 +444,7 @@ protected:
     DIB_COMP_DATA*		m_pCompData;
     FX_LPBYTE			m_pLineBuf;
     FX_LPBYTE			m_pMaskedLine;
-    CFX_DIBitmap*		m_pCachedBitmap;
+    nonstd::unique_ptr<CFX_DIBitmap> m_pCachedBitmap;
     ICodec_ScanlineDecoder*	m_pDecoder;
 };
 #define FPDF_HUGE_IMAGE_SIZE	60000000