ConsoleAnnotator Factory extracts Request.getPathInfo that is null

from SRV.11.2 of the Servlet Spec (2.3), if the servlet mapping is "/" then the servletpath should be the uri minus context and pathinfo should
be null.

it seems tomcat is handling "/*" the same way as "/" (maybe a bug ?)
anyway, a defensive null check and fallback to getServletpath would be fine