Profile debug script to fetch a way from OSM

profiles/lib/profile_debugger.lua

@@ -52,7 +52,7 @@ end
 function canonicalizeStringList(str)
   return str
 end
- 
+
  
  
 -- debug helper
@@ -123,11 +123,14 @@ function Debug.process_way(way,result)
   result.forward_classes = {}
   result.backward_classes = {}
   
-  -- intercept tag function normally provided via C++
+  -- intercept tag functions normally provided via C++
   function way:get_value_by_key(k)
     Debug.register_tag_fetch(k)
     return self[k]
   end
+  function way:get_location_tag(k)
+    return nil
+  end
   
   -- reset tag counts
   Debug:reset_tag_fetch_counts()