Refcount all the IFX_ stream classes all the time.

core/fpdfapi/parser/cpdf_stream.cpp

Index: core/fpdfapi/parser/cpdf_stream.cpp
diff --git a/core/fpdfapi/parser/cpdf_stream.cpp b/core/fpdfapi/parser/cpdf_stream.cpp
index de69bfae7be46d6413d94fc71c6c31535e10305f..4f76ec1c63b884aba605658e9ae5e326e15bd161 100644
--- a/core/fpdfapi/parser/cpdf_stream.cpp
+++ b/core/fpdfapi/parser/cpdf_stream.cpp
@@ -62,8 +62,9 @@ void CPDF_Stream::InitStream(const uint8_t* pData,
     m_pDict->SetNewFor<CPDF_Number>("Length", static_cast<int>(m_dwSize));
 }
 
-void CPDF_Stream::InitStreamFromFile(IFX_SeekableReadStream* pFile,
-                                     std::unique_ptr<CPDF_Dictionary> pDict) {
+void CPDF_Stream::InitStreamFromFile(
+    const CFX_RetainPtr<IFX_SeekableReadStream>& pFile,
+    std::unique_ptr<CPDF_Dictionary> pDict) {
   m_pDict = std::move(pDict);
   m_bMemoryBased = false;
   m_pDataBuf.reset();