Have Position deal with more references

Source/core/editing/markup.cpp

Index: Source/core/editing/markup.cpp
diff --git a/Source/core/editing/markup.cpp b/Source/core/editing/markup.cpp
index 9a6ec3e1846399acf4a8001652e39022abba0c55..4300c40f13249476038b61342cceeb795c884090 100644
--- a/Source/core/editing/markup.cpp
+++ b/Source/core/editing/markup.cpp
@@ -713,8 +713,8 @@ PassRefPtr<DocumentFragment> createFragmentFromMarkupWithContext(Document& docum
         return nullptr;
 
     RefPtr<Range> range = Range::create(*taggedDocument.get(),
-        positionAfterNode(nodeBeforeContext.get()).parentAnchoredEquivalent(),
-        positionBeforeNode(nodeAfterContext.get()).parentAnchoredEquivalent());
+        positionAfterNode(*nodeBeforeContext).parentAnchoredEquivalent(),
+        positionBeforeNode(*nodeAfterContext).parentAnchoredEquivalent());
 
     Node* commonAncestor = range->commonAncestorContainer(ASSERT_NO_EXCEPTION);
     Node* specialCommonAncestor = ancestorToRetainStructureAndAppearanceWithNoRenderer(commonAncestor);