Refcount all the IFX_ stream classes all the time.

core/fpdfapi/parser/cpdf_syntax_parser.cpp

Index: core/fpdfapi/parser/cpdf_syntax_parser.cpp
diff --git a/core/fpdfapi/parser/cpdf_syntax_parser.cpp b/core/fpdfapi/parser/cpdf_syntax_parser.cpp
index 9beae0b7f7ffac229be729def798a09e70bba787..2a20e43591a02c30eeb0bba288c67d67b4ac0b67 100644
--- a/core/fpdfapi/parser/cpdf_syntax_parser.cpp
+++ b/core/fpdfapi/parser/cpdf_syntax_parser.cpp
@@ -756,8 +756,9 @@ std::unique_ptr<CPDF_Stream> CPDF_SyntaxParser::ReadStream(
   return pStream;
 }
 
-void CPDF_SyntaxParser::InitParser(IFX_SeekableReadStream* pFileAccess,
-                                   uint32_t HeaderOffset) {
+void CPDF_SyntaxParser::InitParser(
+    const CFX_RetainPtr<IFX_SeekableReadStream>& pFileAccess,
+    uint32_t HeaderOffset) {
   FX_Free(m_pFileBuf);
 
   m_pFileBuf = FX_Alloc(uint8_t, m_BufSize);