LibXML: Notify the listener about the root node as well

We previously did not notify the listener about entering the root node,
which caused the following snippet to produce the wrong output:
    a = new DOMParser
    a.parseFromString("<x/>", "text/xml").documentElement // != null

1 files changed, 1 insertions, 1 deletions

diff --git a/Userland/Libraries/LibXML/Parser/Parser.cpp b/Userland/Libraries/LibXML/Parser/Parser.cpp
index f73a37fed2..4a6bce9614 100644
--- a/Userland/Libraries/LibXML/Parser/Parser.cpp
+++ b/Userland/Libraries/LibXML/Parser/Parser.cpp
@@ -74,7 +74,7 @@ void Parser::append_node(NonnullOwnPtr<Node> node)
         m_entered_node->content.get<Node::Element>().children.append(move(node));
     } else {
         m_root_node = move(node);
-        m_entered_node = m_root_node.ptr();
+        enter_node(*m_root_node);
     }
 }