Get rid of NULLs in core/

core/fxcodec/jbig2/JBig2_Context.cpp

Index: core/fxcodec/jbig2/JBig2_Context.cpp
diff --git a/core/fxcodec/jbig2/JBig2_Context.cpp b/core/fxcodec/jbig2/JBig2_Context.cpp
index a0a411fbcfd17d3c82674c76808de8ed46debec8..f0f621b6d8db7240d53eb63057452a5f3c20aeaf 100644
--- a/core/fxcodec/jbig2/JBig2_Context.cpp
+++ b/core/fxcodec/jbig2/JBig2_Context.cpp
@@ -69,7 +69,7 @@ CJBig2_Context::CJBig2_Context(CPDF_StreamAcc* pGlobalStream,
       m_PauseStep(10),
       m_pPause(pPause),
       m_ProcessingStatus(FXCODEC_STATUS_FRAME_READY),
-      m_gbContext(NULL),
+      m_gbContext(nullptr),
       m_dwOffset(0),
       m_pSymbolDictCache(pSymbolDictCache),
       m_bIsGlobal(bIsGlobal) {
@@ -85,9 +85,9 @@ CJBig2_Context::CJBig2_Context(CPDF_StreamAcc* pGlobalStream,
 
 CJBig2_Context::~CJBig2_Context() {
   FX_Free(m_gbContext);
-  m_gbContext = NULL;
+  m_gbContext = nullptr;
   delete m_pGlobalContext;
-  m_pGlobalContext = NULL;
+  m_pGlobalContext = nullptr;
 }
 
 int32_t CJBig2_Context::decode_SquentialOrgnazation(IFX_Pause* pPause) {
@@ -259,7 +259,7 @@ CJBig2_Segment* CJBig2_Context::findReferredSegmentByTypeAndIndex(
       ++count;
     }
   }
-  return NULL;
+  return nullptr;
 }
 int32_t CJBig2_Context::parseSegmentHeader(CJBig2_Segment* pSegment) {
   if (m_pStream->readInteger(&pSegment->m_dwNumber) != 0 ||
@@ -737,7 +737,7 @@ int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) {
     }
     pTRD->SBSYMS = SBSYMS.get();
   } else {
-    pTRD->SBSYMS = NULL;
+    pTRD->SBSYMS = nullptr;
   }
 
   std::unique_ptr<JBig2HuffmanCode, FxFreeDeleter> SBSYMCODES;
@@ -946,7 +946,7 @@ int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) {
     m_pPage->composeFrom(ri.x, ri.y, pSegment->m_Result.im,
                          (JBig2ComposeOp)(ri.flags & 0x03));
     delete pSegment->m_Result.im;
-    pSegment->m_Result.im = NULL;
+    pSegment->m_Result.im = nullptr;
   }
   return JBIG2_SUCCESS;
 }
@@ -1064,7 +1064,7 @@ int32_t CJBig2_Context::parseHalftoneRegion(CJBig2_Segment* pSegment,
     m_pPage->composeFrom(ri.x, ri.y, pSegment->m_Result.im,
                          (JBig2ComposeOp)(ri.flags & 0x03));
     delete pSegment->m_Result.im;
-    pSegment->m_Result.im = NULL;
+    pSegment->m_Result.im = nullptr;
   }
   return JBIG2_SUCCESS;
 }
@@ -1137,7 +1137,7 @@ int32_t CJBig2_Context::parseGenericRegion(CJBig2_Segment* pSegment,
     } else {
       m_pArithDecoder.reset();
       FX_Free(m_gbContext);
-      m_gbContext = NULL;
+      m_gbContext = nullptr;
       if (!pSegment->m_Result.im) {
         m_ProcessingStatus = FXCODEC_STATUS_ERROR;
         m_pGRD.reset();
@@ -1168,7 +1168,7 @@ int32_t CJBig2_Context::parseGenericRegion(CJBig2_Segment* pSegment,
                          pSegment->m_Result.im,
                          (JBig2ComposeOp)(m_ri.flags & 0x03), &Rect);
     delete pSegment->m_Result.im;
-    pSegment->m_Result.im = NULL;
+    pSegment->m_Result.im = nullptr;
   }
   m_pGRD.reset();
   return JBIG2_SUCCESS;
@@ -1238,7 +1238,7 @@ int32_t CJBig2_Context::parseGenericRefinementRegion(CJBig2_Segment* pSegment) {
     m_pPage->composeFrom(ri.x, ri.y, pSegment->m_Result.im,
                          (JBig2ComposeOp)(ri.flags & 0x03));
     delete pSegment->m_Result.im;
-    pSegment->m_Result.im = NULL;
+    pSegment->m_Result.im = nullptr;
   }
   return JBIG2_SUCCESS;
 }