Add validation of internal consistency to html entity mapper

src/htmlentity.cpp

@@ -326,6 +326,7 @@ HtmlEntityMapper::HtmlEntityMapper()
   {
     m_name2sym->insert(g_htmlEntities[i].item,new int(g_htmlEntities[i].symb));
   }
+  validate();
 }
 
 HtmlEntityMapper::~HtmlEntityMapper()

src/htmlentity.h

@@ -36,8 +36,8 @@ class HtmlEntityMapper
     const char *rtf(DocSymbol::SymType symb) const;
     const DocSymbol::PerlSymb *perl(DocSymbol::SymType symb) const;
     void  writeXMLSchema(FTextStream &t);
-    void  validate();
   private:
+    void  validate();
     HtmlEntityMapper();
    ~HtmlEntityMapper();
     static HtmlEntityMapper *s_instance;