--- a/editor/libeditor/HTMLEditRules.cpp
+++ b/editor/libeditor/HTMLEditRules.cpp
@@ -184,30 +184,23 @@ class MOZ_RAII AutoSetTemporaryAncestorL
 };
 
 /********************************************************
  * mozilla::HTMLEditRules
  ********************************************************/
 
 HTMLEditRules::HTMLEditRules() : mHTMLEditor(nullptr), mInitialized(false) {
   mIsHTMLEditRules = true;
-  InitFields();
-}
-
-void HTMLEditRules::InitFields() {
-  mHTMLEditor = nullptr;
 }
 
 nsresult HTMLEditRules::Init(TextEditor* aTextEditor) {
   if (NS_WARN_IF(!aTextEditor) || NS_WARN_IF(!aTextEditor->AsHTMLEditor())) {
     return NS_ERROR_INVALID_ARG;
   }
 
-  InitFields();
-
   mHTMLEditor = aTextEditor->AsHTMLEditor();
   if (NS_WARN_IF(!mHTMLEditor)) {
     return NS_ERROR_FAILURE;
   }
 
   AutoSafeEditorData setData(*this, *mHTMLEditor);
 
   nsresult rv = TextEditRules::Init(aTextEditor);

--- a/editor/libeditor/HTMLEditRules.h
+++ b/editor/libeditor/HTMLEditRules.h
@@ -115,18 +115,16 @@ class HTMLEditRules : public TextEditRul
 
   HTMLEditor& HTMLEditorRef() const {
     MOZ_ASSERT(mData);
     return mData->HTMLEditorRef();
   }
 
   enum RulesEndpoint { kStart, kEnd };
 
-  void InitFields();
-
   /**
    * Called before inserting something into the editor.
    * This method may removes mBougsNode if there is.  Therefore, this method
    * might cause destroying the editor.
    *
    * @param aCancel             Returns true if the operation is canceled.
    *                            This can be nullptr.
    */