Use the 'httpc' module instead of 'http' to avoid deprecation warnings

src/erlsom_lib.erl

@@ -744,7 +744,7 @@ prefix(Namespace) ->
 %%% slightly modified
 %%% --------------------------------------------------------------------
 get_url("http://"++_ = URL) ->
-    case http:request(URL) of
+    case httpc:request(URL) of
 	{ok,{{_HTTP,200,_OK}, _Headers, Body}} -> 
 	    case http_uri:parse(URL) of
 		{_Method, _, _Host, _Port, _Path, _Qargs} ->