Assert that only 0-numbered objects are Released()

core/fpdfapi/fpdf_parser/cpdf_stream.cpp

Index: core/fpdfapi/fpdf_parser/cpdf_stream.cpp
diff --git a/core/fpdfapi/fpdf_parser/cpdf_stream.cpp b/core/fpdfapi/fpdf_parser/cpdf_stream.cpp
index 4f6d0463977a64d8c4eb9ff5e79b3d7feb40c508..6a0bf05937920b5153cb9ccf5cc12cec67b2b948 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_stream.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_stream.cpp
@@ -19,7 +19,11 @@ CPDF_Stream::CPDF_Stream(uint8_t* pData, uint32_t size, CPDF_Dictionary* pDict)
       m_dwSize(size),
       m_pDataBuf(pData) {}
 
-CPDF_Stream::~CPDF_Stream() {}
+CPDF_Stream::~CPDF_Stream() {
+  m_ObjNum = kInvalidObjNum;
+  if (m_pDict && m_pDict->GetObjNum() == kInvalidObjNum)
+    m_pDict.release();  // lowercase release, release ownership.
+}
 
 CPDF_Object::Type CPDF_Stream::GetType() const {
   return STREAM;