Replace Release() { delete this; } in fde_xml_imp.h

xfa/fxfa/parser/xfa_document_imp.cpp

Index: xfa/fxfa/parser/xfa_document_imp.cpp
diff --git a/xfa/fxfa/parser/xfa_document_imp.cpp b/xfa/fxfa/parser/xfa_document_imp.cpp
index 0421683e07e7ed29b933c1091fb9d6ecf8a2a1e8..3f1737a7f8493a4695c2733de21cce8dc5f2bef0 100644
--- a/xfa/fxfa/parser/xfa_document_imp.cpp
+++ b/xfa/fxfa/parser/xfa_document_imp.cpp
@@ -77,6 +77,12 @@ void CXFA_Document::SetRoot(CXFA_Node* pNewRoot) {
   m_pRootNode = pNewRoot;
   RemovePurgeNode(pNewRoot);
 }
+
+void CXFA_Document::DestroyParser() {
+  delete m_pParser;
+  m_pParser = nullptr;
+}
+
 CXFA_FFNotify* CXFA_Document::GetNotify() const {
   return m_pParser->GetNotify();
 }