DocumentParser should flush itself on finish

Source/core/loader/DocumentWriter.cpp

Index: Source/core/loader/DocumentWriter.cpp
diff --git a/Source/core/loader/DocumentWriter.cpp b/Source/core/loader/DocumentWriter.cpp
index 86f1eff6e64ab056bc8eef05a85cc1aa3e0fff68..6aa5acbd902aa8b41f36508709a207b0b7843341 100644
--- a/Source/core/loader/DocumentWriter.cpp
+++ b/Source/core/loader/DocumentWriter.cpp
@@ -115,13 +115,9 @@ void DocumentWriter::end()
         OwnPtr<TextResourceDecoder> decoder = m_decoderBuilder.buildFor(m_document);
         m_parser->setDecoder(decoder.release());
     }
-    // flush() can result replacing DocumentLoader::m_writer.
-    RefPtrWillBeRawPtr<DocumentWriter> protectingThis(this);
-    m_parser->flush();
-
-    if (!m_parser)
-        return;
 
+    // finish() can result replacing DocumentLoader::m_writer.
+    RefPtrWillBeRawPtr<DocumentWriter> protectingThis(this);
     m_parser->finish();
     m_parser = nullptr;
     m_document = nullptr;