fixin' a segfault

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@12580 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/event_handlers/mod_erlang_event/mod_erlang_event.c

@@ -950,7 +950,7 @@ static int config(void)
 	}
 
 	if (!prefs.nodename) {
-		prefs.nodename = "freeswitch";
+		set_pref_nodename("freeswitch");
 	}
 
 	return 0;