Cleanup ownership of parser members

xfa/fxfa/parser/cxfa_document_parser.cpp

Index: xfa/fxfa/parser/cxfa_document_parser.cpp
diff --git a/xfa/fxfa/parser/cxfa_document_parser.cpp b/xfa/fxfa/parser/cxfa_document_parser.cpp
index 9a45d36c1f9a6fff69927f832303fdcfd1a894c8..39496b8cb03a0196bac16b55d871c6d797937e07 100644
--- a/xfa/fxfa/parser/cxfa_document_parser.cpp
+++ b/xfa/fxfa/parser/cxfa_document_parser.cpp
@@ -13,12 +13,13 @@ CXFA_DocumentParser::CXFA_DocumentParser(CXFA_FFNotify* pNotify)
     : m_nodeParser(nullptr, TRUE), m_pNotify(pNotify), m_pDocument(nullptr) {}
 
 CXFA_DocumentParser::~CXFA_DocumentParser() {
-  CloseParser();
 }
 
 int32_t CXFA_DocumentParser::StartParse(IFX_FileRead* pStream,
                                         XFA_XDPPACKET ePacketID) {
-  CloseParser();
+  m_pDocument.reset();
+  m_nodeParser.CloseParser();
+
   int32_t nRetStatus = m_nodeParser.StartParse(pStream, ePacketID);
   if (nRetStatus == XFA_PARSESTATUS_Ready) {
     m_pDocument.reset(new CXFA_Document(this));
@@ -47,8 +48,3 @@ CXFA_FFNotify* CXFA_DocumentParser::GetNotify() const {
 CXFA_Document* CXFA_DocumentParser::GetDocument() const {
   return m_pDocument.get();
 }
-
-void CXFA_DocumentParser::CloseParser() {
-  m_pDocument.reset();
-  m_nodeParser.CloseParser();
-}